Protamin
n. （鱼）精蛋白
🗣️ 情景例句
Some music tapes and some blank tapes
带一些音乐带和一些空白带
Do not cut down the tree that gives you shade.
不要忘恩负义。
After a short time a line of bees fly to and from the hive like a thin stream.
过不了一会儿，一队蜜蜂像一条小溪一样在蜂箱和喂食点之间来往飞行。