縮回的用法和樣例：
例句
-
蝸牛一碰就縮回去了。
A snail shrinks back at a touch. -
約翰尼把拳頭縮回，然后向那強盜猛打一下。
Johnny drew back his fist and let the robber have it. -
輕型飛機飛行時(shí)起落架不一定縮回。
The undercarriage on light aircraft does not always retract in flight.
