A larva metamorphose into a chrysalis and then into a butterfly.幼虫变为蛹,然後再变成蝴蝶.A larva metamorphoses into a chrysalis and then into a butterfly.幼虫变为蝶蛹,再变成蝴蝶.Silkworm chrysalis is the important raw material of silk industr...
我们见到了随从将军的副官.We met the officer attendant on the general.当然在过去，副官掌管着舰队司令的信号旗。In olden days, of course, a flag-lieutenant was in charge of the Admiral's signal flags.他说动那个副官,递上了一张简短的便条进去.He prevailed on the lieutenan...