大多数海洋腹足纲软体动物在某些幼体阶段形成一种有纤毛的游泳器官。Most marine gastropod mollusks develop a ciliate swimming organ in certain larval stages.毛虫是蝴蝶的幼体.A caterpillar is the larva of a butterfly.蝌蚪是蛙的幼体.The tadpole is the larva of the frog....
It's a satire somewhat in the manner of Dickens.这部讽刺作品有点狄更斯的风格。Dickens felt compelled to return to the stage for a final good-bye.迪肯斯觉得必须返回舞台作最后的道别。Where the dickens did he go?他究竟上哪儿去了？...
许多男孩子在7月4日那天放爆竹.Many boys explode firecrackers on the Fourth of July.桌上每个位置旁都有彩包爆竹.There was a cracker beside every place at the table.爆竹没响.The firecracker didn't go off....