Pentasaccharides
五糖
🗣️ 情景例句
Thanks to you, Richard,
谢谢你， Richard，
Hello. Is Mrs.James in, please?
喂，请问詹姆斯太太在家吗？
Which do you prefer, horse riding or shooting?
你比较喜欢哪一种呢，骑马还是射击？