HSK 7-9
互补
hùbǔ动
complementary; to complement each other
两人的专业优势正好互补。
Liǎng rén de zhuān yè yōu shì zhèng hǎo hù bǔ.
Their professional strengths complement each other perfectly.
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Appears across levels (7-9) in the HSK 3.0 word list.