natural disaster自然灾害
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The powerful vortices appeared yesterday morning when the oceans, swollen by the vast surge of water, began to recede. The powerful vortices appeared yesterday morning when the oceans, swollen by the vast surge of water, began to recede. 在广大淹水地区出现“退水”的情况下，出现威力强劲的大漩涡。
An unusual phenomenon(现象) about the tsunami in Japan!!!
Mariners who escaped the onslaught of the tsunami soon had to contend with another peril - the appearance of vast whirlpools off the coast of Japan. 刚刚逃过滚滚而来的巨大海啸浪涛的船员还来不及喘息，就又将面 对另一处险象环生的挑战——在日本近海岸线上出现的巨大漩涡。
A tsunami is a series of water waves. It is caused by the displacement of a large volume of a body of water, such as an ocean.
——This is a picture about the tsunami in Japan.
Originally, the interior of the earth is filled with hot magma. Under tremendous pressure, the hot magma will break through the earth's crust and spouts out, causing the volcano.
The only way:
Go while the going is good!!! (三十六计，走为上策 )
Floods are among the most frequent and costly natural disasters. 洪水是最常见的、代价最高的自然灾害之一。 Conditions that cause floods include heavy or steady rain for several hours or days that saturates the ground. 浸透土地的持续几小时或几天的大量降水是导致 洪水的主要原因。
Natural disaster
——From group three
Fire, Water ...
… and Snow
Sea Wall
Troubled Water
In a Jam
Lower Manhattan Laid Low
Calm After the Storm
Beach, Before Landfall
原来，地球内部充满了热的岩浆。在巨大的压力下， 滚烫的岩浆会冲破地壳，喷出，造成火山。
Harm
1.Cause great bad impact on the global climate 2. Ash and rain mixed form mudslides（泥石流） 3. Ash can cause respiratory diseases（呼吸道疾病）
(风化)greatly improves soil fertility.
ቤተ መጻሕፍቲ ባይዱ
volcano
3.The amazing scenery
Mount Fuji in Japan
Ash as
fertilizer （肥 料）
Most importantly :
How to protect yourself in the volcano eruption?
As we knew, a tsunami happened in Japan because of the earthquake. As a result, it caused a series of problems. It was in Japan that a large number of people lost their life. And many buildings were destroyed. It was the natural disaster that people could not hold back.
Benefits
1. Many of the volcanic materials have important industrial and chemical uses.
Salt and minerals
2. Volcanic ash that has been weathered after the eruption of a
As the water levels fell, whirlpools hundreds of yards wide appeared, sucking everything into the themselves and creating new danger for passing boats. 随着水位的下降，漩涡的范围扩张到几十码的区域，它 毫不留情滴将周围的所有一切都吸入其内，这又给过往 的船只造成了新的危险。 Whirlpools are created by rising and falling water - and are a common feature of tsunamis. But they are rarely as spectacular - or as well photographed. 漩涡是由于水涨水退的变化而引起的，是海啸所常常伴 随的现象，但拍摄到如此大规模的海啸，的确实属少见.
An unusual phenomenon(现象) about the tsunami in Japan!!!
Mariners who escaped the onslaught of the tsunami soon had to contend with another peril - the appearance of vast whirlpools off the coast of Japan. 刚刚逃过滚滚而来的巨大海啸浪涛的船员还来不及喘息，就又将面 对另一处险象环生的挑战——在日本近海岸线上出现的巨大漩涡。
A tsunami is a series of water waves. It is caused by the displacement of a large volume of a body of water, such as an ocean.
——This is a picture about the tsunami in Japan.
Originally, the interior of the earth is filled with hot magma. Under tremendous pressure, the hot magma will break through the earth's crust and spouts out, causing the volcano.
The only way:
Go while the going is good!!! (三十六计，走为上策 )
Floods are among the most frequent and costly natural disasters. 洪水是最常见的、代价最高的自然灾害之一。 Conditions that cause floods include heavy or steady rain for several hours or days that saturates the ground. 浸透土地的持续几小时或几天的大量降水是导致 洪水的主要原因。
Natural disaster
——From group three
Fire, Water ...
… and Snow
Sea Wall
Troubled Water
In a Jam
Lower Manhattan Laid Low
Calm After the Storm
Beach, Before Landfall
原来，地球内部充满了热的岩浆。在巨大的压力下， 滚烫的岩浆会冲破地壳，喷出，造成火山。
Harm
1.Cause great bad impact on the global climate 2. Ash and rain mixed form mudslides（泥石流） 3. Ash can cause respiratory diseases（呼吸道疾病）
(风化)greatly improves soil fertility.
ቤተ መጻሕፍቲ ባይዱ
volcano
3.The amazing scenery
Mount Fuji in Japan
Ash as
fertilizer （肥 料）
Most importantly :
How to protect yourself in the volcano eruption?
As we knew, a tsunami happened in Japan because of the earthquake. As a result, it caused a series of problems. It was in Japan that a large number of people lost their life. And many buildings were destroyed. It was the natural disaster that people could not hold back.
Benefits
1. Many of the volcanic materials have important industrial and chemical uses.
Salt and minerals
2. Volcanic ash that has been weathered after the eruption of a
As the water levels fell, whirlpools hundreds of yards wide appeared, sucking everything into the themselves and creating new danger for passing boats. 随着水位的下降，漩涡的范围扩张到几十码的区域，它 毫不留情滴将周围的所有一切都吸入其内，这又给过往 的船只造成了新的危险。 Whirlpools are created by rising and falling water - and are a common feature of tsunamis. But they are rarely as spectacular - or as well photographed. 漩涡是由于水涨水退的变化而引起的，是海啸所常常伴 随的现象，但拍摄到如此大规模的海啸，的确实属少见.