Pentasaccharides
五糖
🗣️ 情景例句
I go to brunch every Sunday.
我每星期天早午餐合吃。
When can we expect its delivery?
什么时间能发货呢？
Now she's holding it for Jim. Jim is climbing up the ladder.
现在她在给吉姆扶着梯子。吉姆正在爬上梯子。