1.implicit a.不言明的；无疑问的

And deposits enjoy an implicit state guarantee.
可是国家却一直为储蓄提供隐性的担保。

2.climate n.气候；水土，风土

Climate change will cause mass migration.
气候变化将导致大规模移民。

3.stratosphere n.平流层，同温层

Aircraft engines are optimised for level flight at cruising speed in the stratosphere.
飞机在平流层以巡航速度水平飞行时，其发动机将得到优化。

4.tropic n.回归线；热带

The tropic sun glared down on us all day.
热带的太阳整日灼晒着我们。

5.evaporation n.蒸发，发散；消失

My anger evaporated and I wanted to cry.
我的怒气渐渐消失，想大哭一场。