HSK 6
头脑
tóunǎo名
brains; mind; skull; (fig.) gist (of a matter)
遇到危险时要保持头脑清醒。
Yù dào wēi xiǎn shí yào bǎo chí tóu nǎo qīng xǐng.
Keep a clear head when facing danger.
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New in the HSK 3.0 word list at level 6.