She felt unequal to the task she had set herself.

她觉得难以完成给自己定下的任务。

《牛津词典》

Put the list away and then set yourself the same task a week later.

把这个名单收起来，一周后再给自己设定同样的任务。

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Gharib and Graff set themselves the task of raising a 4.5-meter stone column from horizontal to vertical, using no source of energy except the wind.

加里卜与格拉芙制定了一项任务：仅利用风能，将一个水平放置的4.5米高石柱提至与地面垂直。

youdao

Mr Wood said this might reflect the complexity of the task Apple set itself when getting the iPhone working the iCloud service.

BBC: Fifth iPhone expected to be launched by Apple

Just for fun, we sent Paul Siegert for a walk on the South Downs and set him the task of working out just how many quangos have a say in some of Sussex's most iconic views - the answer is rather shocking.

BBC: NEWS | Programmes | Politics Show | South East: Quango fog...

While the main considerations of the charter are preventing the illegal use of robots and protecting the data that they acquire, the task force set to draft the code have not overlooked programming ethical standards into the automatons of the future.

CNN: The rights and wrongs of robots