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
In China, Spring Festival is the biggest holiday of the year, but in the west Christmas is the biggest.
中国最大的节日是春节，西方最大的节日是圣诞节。
It's cool this afternoon.
今天下午很凉。
Oh, we can call it Mid-Autumn Day. We eat mooncakes on that day.
噢，我们管它叫中秋节。过节那天我们吃月饼。