important task;heavy responsibility;important mission;important office [post] ;

他不得不将向潜在客户测试和展示飞行器的重任交托给一名助手。
来源:《柯林斯高阶英汉双解学习词典》With the great responsibility you are about to assume you must keep up your strength.
你马上就要担当重任了,你得保重身体.
来源:词典精选例句Senior officers might well rotate in sharing the burdens and honors of staff and command duty.
高级军官最好能轮流出来分享指挥的重任和荣誉.
来源:词典精选例句The present leaders have to decide whether to stand down and hand over to a younger generation.
现任领导层必须决定是否应退居二线,把重任移交给更为年轻的一代。
来源:《柯林斯高阶英汉双解学习词典》
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