Norleucine

正亮氨酸, 己氨酸

🗣️ 情景例句

do you need any help?
需要帮忙吗?
No, she isn't.
不,她不是。
To our dismay, we saw that there were snails everywhere:
让人沮丧的是,我们发现到处都是蜗牛:
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