loading and discharging是什么意思 loading and discharging怎么读
loading and discharging的相关资料
loading and discharging的用法和样例
- He can take a bicycle apart and put it back again.
他会装卸自行车。 - The boy liked to watch the boats being loaded and unloaded.
这男孩爱看轮船装卸货物。
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