He never does what he had to do at the proper time.
他从来都不在适当的时间做应该做的事。
It lets air and fuel in and out of the engine at the proper time.
气阀机构就相当于一个交警，指挥空气和燃料在合适的时间进出引擎。
These all look to you to give them their food at the proper time.
这都仰望你按时给它食物。
Everyone shares the huge responsibility of demonstrating his or her justice at the proper time.
所有人都该承担巨大的社会责任在适当的时候展示他或她的正义感。
They will visit the country again at a proper time.
他们将在适当的时候再度访问这个国家。
They will visit the country again at a proper time.
他们将在适当的时候再度访问这个国家。
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