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
If I work hard now, when I retire I'll be very well off financially.
如果我现在努力工作的话，退体后就会很富有。
I asked him to pay, but he wouldn't.
我请他付账，但是他不肯。
They all went up some narrow steps into a large room.
他们全都登上这些狭窄的台阶，接着进入一个大房间。