Oscillationg crystal
[电] 振荡晶体
🧩 词语组成解析
🗣️ 情景例句
I was deeply impressed by his speech.
他的演讲给我留下深刻的印象。
Don't forget to put stamps on the letter before you mail it.
不要忘记在寄信以前把邮票贴在信封上。
That's international practice. We can't break it.
这是国际惯例，我们不能违背。