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[医]纤维光学的
🗣️ 情景例句
These are polite questions.
这些问题都是礼貌的。
Beggars must (should) be no choosers.
行乞的哪能挑肥拣瘦；饥不择食。
The city was equipped with a drainage system, for a great many clay pipes were found beneath the narrow streets.
城里甚至还敷设了排水系统，因为在狭窄的街道底下发现了许许多多陶土制作的排水管道。