1. vi.颠簸　 thrust its bows into the water
2. vt.使陷入　 put into, put or go suddenly and with force

　～ authoritatively　可靠地投入
　～ boldly　勇敢地跳入
　～ conventionally　按常规投入
　～ daringly　大胆地投入
　～ desperately　毫无顾忌地投入
　～ fiercely　激烈地投入
　～ heavily　重重地投入
　～ ignominiously　不光彩地投入
　～ impetuously　急躁地投入
　～ inescapably　不可避免地投入
　～ mysteriously　神秘地投入
　～ noiselessly　悄悄地投入
　～ officially　正式地投入
　～ passively　消极投入
　～ prematurely　过早地投入
　～ quickly　快速地投入
　～ recklessly　不顾后果地投入
　～ resolutely　果断地投入
　～ scientifically　科学地投入
　～ superficially　表面上投入
　～ symbolically　象征性地投入
　～ thoughtlessly　轻率地投入
　～ unaccountably　莫名其妙地投入
　～ uselessly　没必要地投入
　～ violently　猛烈地投入
　～ voluntarily　自愿地投入
　～ whole-heartedly　全心全意地投入
　～ wildly　粗野地投入
　～ in debt　债台高筑
　～ into action　立即投入行动
　～ into darkness　陷入黑暗中
　～ into the sea　跳入大海
　～ into the water　跳入水中
　～ through a fence　穿过篱笆
　～ to death　死
　～ under fire　在炮火中前进

　The ship plunged dangerously in the rough sea.　轮船在汹涌的海浪中危险地颠簸着。
　That man plunged in the river but not to save the child.　那个人在河中浮沉但是救不了那个孩子。
　The sudden stopping of the car plunged him forwards.　汽车急刹车，使得他猛地向前倾去。

 ♣ plunge about in　(v.+adv.+prep.)
　在…中颠簸　thrust its bows into sth
　The little boat plunged about in the storm.　小船在暴风雨中颠簸得很厉害。
 ♣ plunge down to　(v.+adv.+prep.)
　猛然掉到…上　drop sth to sth suddenly
　The rope broke, and the elevator plunged down to the ground.　缆绳断了，电梯猛然掉到地面上。
 ♣ plunge into　(v.+prep.)
1. 把…放入 put into
　The maid plunged the cloth into the pail and cleaned the floor.　那个侍女把拖把放进桶里浸湿，用来擦地。
2. 突然陷入或呈现出 suddenly assume or cause sb/sth to assume a particular mood, condition, state, etc.
　The elephant plunged into the forest.　大象猛地冲入森林。
　The firemen plunged into the burning building.　消防队员们冲进正在燃烧的大楼。
　The children plunged into the pool for a swim.　孩子们跳进池塘里游泳。
　He plunged into the cold water to save the boy without hesitation.　他毫不犹豫地跳入冰冷的水中去救孩子。
　The soldiers plunged into action although they had just marched 20 miles.　士兵们刚跑完二十英里的路程，便立刻投入了战斗。
　The whole district plunged into darkness because of a sudden power cut.　突然停电把整个地区投入一片黑暗之中。
　Because of the economic depression the company plunged deeper into debt.　由于经济萧条，这家公司已债台高筑。
　They do not readily plunge into battle with such powerful forces.　他们无意与这样的劲旅交战。
　Don't be too keen to plunge into argument with him; he's an experienced speaker.　不必急于同他争辩，他是个讲话老练的人。
　He plunged himself into work upon his arrival.　他一到就投入工作。
　A power failure plunged the whole house into sudden darkness.　停电了，整个房子突然陷入一片漆黑之中。
　He was plunged into despair by the terrible news.　这个可怕的消息使他突然陷于绝望之中。

 ♣ plunge, dive, pitch
　这组词意思相近，其区别在于：plunge指自身主动或在外力作用下的“投入”“陷入”“浸入”某种状态之中，强调“突然”和“用力”; dive常指有意识和有目的地“跳入”“投入”，侧重于动作的熟练和姿态的优雅，引申可指“专心研究”某事；pitch常指无意识、无计划地向前或向下“扔”“投”“抛”，也可指船在暴风雨中“前后摇摆”。

1. S 投入，跳入；猛冲　an act of plunging, especially head first into water
2. S 猛跌，骤降　a steep fall

　John felt refreshed after a quick plunge in the lake.　在湖中游了一会儿泳后，约翰感到精神振奋。
　His plunge won the race.　他的冲刺使他赢得了赛跑的第一名。
　The sky diver had a plunge of more than 20,000 feet before his parachute opened.　那个跳伞运动员坠落了两万多英尺，他的降落伞才打开。