一心二用 | to do two things at once

yī一xīn心èr二yòng用

to try to do two things at once; to have one's mind on two things, often resulting in reduced efficiency or poor outcomes

学习时，如果一心二用，就很难集中注意力，学习效果也会大打折扣

When studying, if you try to do two things at once, it's difficult to concentrate, and your learning effectiveness will be greatly reduced.

Era:

Modern

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