Nanocrystal
纳米晶体
🗣️ 情景例句
How long is this flight?
这趟飞行有多长时间？
If there's anything else I can do, please call on me.
如果有任何事情我能效劳的话，请打电话给我。
The order will be mailed to you next week.
下星期就寄给你们。