Triplexing
三联鍊钢法
🗣️ 情景例句
Who knows?
谁知道？
I plan to go to the concert.
我打算去听音乐会。
If, at the time, the British had not feared invasion, it would have been completed.
如果不是因为那时英国人害怕入侵，隧道早已建成了。