幼虫变为蛹,然後再变成蝴蝶.A larva metamorphose into a chrysalis and then into a butterfly.蝴蝶由蛹孵化而出.The butterfly emerged from the pupa.蛹蛰伏在土壤中,直到冬天它们才蜕变成蛾子飞出来。The pupae remain dormant in the soil until they emerge as adult moths in ...
Relations between the two countries have plumbed new depths.两国关系已降到了最低谷。Last night's harrowing television pictures plumbed new depths of depravity.昨晚触目惊心的电视画面堕落到了新低。He had a washing machine plumbed in.他已把洗衣机的各种管子都接好...