启动后和关闭前挂钩在默认情况下是空的。
The post-startup and pre-shutdown hooks are blank by default.
启动事件有启动后挂钩；停止事件有关闭前挂钩。
The start events have post-startup hooks; the stop events have pre-shutdown hooks.
把车开走前，请再检查一下拖车的挂钩。
保持前肩打开，就像衬衫挂在衣架上而不是挂在挂钩上。
Keep the fronts of the shoulders open like a shirt on a hanger, instead of a shirt on a peg.
他脱去帽子和围巾，走到挂钩前，要把它们挂起来。
He took off his hat and shawl and went to the rack to hang them up.
他脱去帽子和围巾，走到挂钩前，要把它们挂起来。
He took off his hat and shawl and went to the rack to hang them up.
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