quietens的解释
1. Watch how the baby quietens when he hears the music.
看看婴儿听到音乐时是怎么安静下来的。
2. Nevertheless, the time when one quietens down and thinks back, one would miss the cozy racket that used to be so annoying.
可是，一个人安静下来时会觉得，曾经厌烦的那些嘈杂回想起来很温情很怀念。
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3. Tethered quietens sometimes a tame elephant is tethered nearby to give the wild one confidence, and in most cases the captive gradually quietens down and begins to accept its food.
有时，把一头已驯服的象拴在旁边能给野象以信心。在大多数情况下，刚捕来的象会慢慢静下来，接着开始吃食。
4. And in most cases the captive gradually quietens down and begins to accept its food.
在大多数情况下，刚捕来的象会慢慢静下来，接着开始吃食。
5. A silencer quietens the noise of the engine.
消声器把发动机的噪音消弭了。
6. Sometimes a tame elephant is tethered nearby to give the wild one confidence and in most cases the captive gradually quietens down and begins to accept its food.
有时把一头驯服的象拴在四周以取得野象的信任，大多数情况下，新捕的象会逐渐安静下来，并开始接受喂饲的食物。
7. Sometimes a tame elephant is tethered nearby to give the wild one confidence, and in most cases the captive gradually quietens down and begins to accept its food.
这种极端的事例虽不可全信，但强调了一项基本原则，象和驯象员之间的关系是驯象成功与否的关健。