Non-linear optic crystal
[化] 非线性光学晶体
🧩 词语组成解析
non
[[nɔn]]
adv. 非, 不
optic
['ɔptik]
adj. 眼睛的，视觉的;光学的;镜片;
🗣️ 情景例句
if, and I repeat,
只要， 我重复一遍，
How much is this rug?
这条地毯多少钱？
Yes, and we must stop people walking on this floor until it's firm. It may be necessary to put up a notice saying Keep off. Another thing, we' ll have to drill a hole in the wall for the electric wires.
是的，因此在地板牢固前，我们必须防止人们从地板上行走。可能还需要竖一个布告牌，写上“不得践踏”。还有，我们必须在墙上钻一个电线孔。