HSK 7-9
孵化
fūhuà动
breeding; to incubate; innovation (esp. in commerce and marketing)
恒温箱正在孵化这些鸟蛋。
Héng wēn xiāng zhèng zài fū huà zhè xiē niǎo dàn.
The incubator is hatching these bird eggs.
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Appears across levels (7-9) in the HSK 3.0 word list.