孵蛋英文

答案：laying eggs． 分析句子结构可知，本句中包含一个by引导的介词短语作方式状语，介词后面需要跟动词的ing形式；lay eggs下蛋，产卵．故答案为laying eggs．

下蛋 lay eggs孵蛋 incubate eggs

hatch /hætʃ/ verb, noun 1 [V] ~ (out) (of a young bird, fish, insect, etc. 小鸟、小鱼) to come out of an egg 孵出；出壳 ： Ten chicks hatched (out) this morning. 今早有十只小鸡出壳了。 2 [V] ~ (out) (of an egg 蛋) to break open so that a young bird, fish, insect, etc. can come out 孵化；破壳 ： The eggs are about to hatch. 这些蛋就要孵化了。 3 [VN] to make a young bird, fish, insect, etc. come out of an egg 使（小鸟、小鱼、小虫等）孵出 ： The female must find a warm place to hatch her eggs. 母的必须找个温暖的地方孵蛋。