Phosphoranyl
正膦基
🗣️ 情景例句
That's nice. Length. Length?
太好了。身高 ，多高？
Study sickness while you are well.
居安思危。
Two of his assistants had been working busily since eight o'clock and had only just finished.
他手下两名店员从早上8点就开始忙碌，这时刚刚布置完毕。