An operation is beginning to try to save a species of crocodile from extinction.
一项行动正在展开来拯救一个鳄鱼种类使其免遭灭绝。
He is beginning to pick up after the operation.
手术后他的病有了起色。
The air in cylinder should be fully discharged at the beginning of operation.
运转初期，必须完全排清油缸内的空气。
Safe operation is assured for beginning and regular turns, is convenient.
安全操作是首要问题，常规转动是很方便的。
Safe operation is assured for beginning and regular turns, is convenient.
安全操作是首要问题，常规转动是很方便的。
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