HSK 7-9
全心全意
quánxīn-quányì(idiom) heart and soul; wholeheartedly
志愿者全心全意服务社区。
Zhìyuànzhě quánxīnquányì fúwù shèqū.
The volunteers serve the community wholeheartedly.
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Appears across levels (7-9) in the HSK 3.0 word list.