Optical cement
[计] 光学胶, 光学接合剂
🧩 词语组成解析
cement
[si'ment]
n. 水泥;胶合剂;胶接剂;粘固粉;
vt. 粘牢;巩固;（用水泥、胶等）粘结;在…上抹水泥;
🗣️ 情景例句
Yeah, where have you been lately?
是啊，你最近到哪儿去了？
I took off my galsses.
我摘下了我的眼镜。
At the front of the classrooom.
在教室前排。