She has invented a nifty little gadget for undoing stubborn nuts and bolts.
她发明了一种灵巧的小工具用来松紧固的螺母和螺栓。
She has invented a nifty little gadget for undoing stubborn nuts and bolts.
她发明了一种灵巧的小工具用来松紧固的螺母和螺栓。
The new president spent the first year undoing the work of his predecessor.
新用了第一年的时间来收拾前留下的摊子。
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