Optical axis of crystal
[化] 晶体光轴
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
How are you?
好吗？
Rivers need a spring.
大河要有源头。
tell me that they have been expecting a splendid crop this year and harvesting has begun earlier than usual.
告诉我，他们一直期待着今年获得一个大丰收，收割工作比往年开始要早些。