Endotoky
体内卵发育
🗣️ 情景例句
Things look black.
前途暗淡。
Courtesy costs nothing.
谦虚恭敬，不用分文。
Oil rigs have to be repaired frequently and divers,who often have to work in darkness a hundred feet under water,
钻井平台需要经常修理，潜水员常常要在水面100英尺以下摸黑工作，