我需要一些邮票。你包里有吗?
乘长途客运汽车、火车或飞机前,你必须检查你包里的东西,以确保你没有携带任何危险的物品。
Before getting on a coach, a train or a plane, you must have the contents of your bag checked to make sure you aren't carrying any dangerous things.
麦克:下次你包饺子时叫上我。
You break the seal between them and feel the thing get cold, for example, right.
如果你买了制冷或加热包,你打开它们之间的封条。
Or, if you are at a party and you're ready to leave but you've left your bag with the host,
又或者,你在一个派对上,你准备要走了,但是你刚才把你的包放在派对主人那里了,
another thing that you'd find if you looked inside the axon terminals of any of these pre-synaptic membranes, you'd find lots of vesicles or some membrane bound compartments that contain special chemicals called neurotransmitters.
如果你仔细观察,突触前膜的轴突末梢内部,你会发现很多小泡,即膜包被的结构,包含有称为神经递质的特殊化合物
应用推荐