Drawtube
n. (显微镜的)镜筒,伸缩管
🗣️ 情景例句
you know,
你知道的，
We would appreciate it if you let us know whether you allow cash or trade discounts.
若能告知你方是否给现金折扣或商业折扣，将不胜感激。
The boy was too nervous to speak.
那男孩紧张得说不出话来。