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main line的英文翻译是什么意思，词典释义与在线翻译：
参考翻译
- 电话中继线,(铁路等的)干线
英英释义
Noun:
-
the principal route of a transportation system
main line的用法和样例：
例句
用作名词 (n.)
- We have been wired into the main system now.
我们现在已经与输电干线接通了。 - The railway line comes to the airport.
铁道干线直达飞机场。
词汇搭配
- main line 干线
