Pentasaccharides
五糖
🗣️ 情景例句
Hi, Alexandra. Come on in.
嗨， Alexandra 。请进。
I'm sorry, but she won't have any openings until 11:00, unless there's a cancellation.
对不起，除非有预约取消，11点以前她没有空。
The basic features include a crest (the highest point of the wave),
它们的基本特征包括浪峰（波浪的最高点）