HSK 6
首要
shǒuyào形
the most important; of chief importance
保障安全是这次活动的首要任务。
Bǎo zhàng ān quán shì zhè cì huó dòng de shǒu yào rèn wu.
Ensuring safety is the top priority for this event.
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New in the HSK 3.0 word list at level 6.