Selectins
(selectin 的复数) 选择蛋白
🗣️ 情景例句
Do we have to bag our own groceries?
我必须自己装我们买的商品吗？
Mother doesn't approve of her smoking.
母亲不赞成她吸烟。
The characters on the paper were white, and the rest of the paper was black.
纸上的汉字呈白色，其余部分成黑色。