例句：

　　The enemy would always have the advantage of familiarity with the rugged terrain.

　　敵人會一直在對崎嶇地形的熟悉上占有優(yōu)勢。

　　He knows the terrain of this locality like the back of his hand.

　　他對這一帶的地形了如指掌。

　　Somewhere a train whistled.

　　某個地方響起了火車的鳴笛聲。

　　The train was losing speed.

　　火車當時正在減速。