an unusual thing happened
一件不寻常的事发生了
以上为机器翻译结果，长、整句建议使用 人工翻译 。
When I started waving to the drivers who passed, an unusual thing happened: After a few days, they not only started waving back, but they also gave me a wider berth.
当我朝路过的司机挥手时，不寻常的事情发生了：几天以后，他们不仅开始挥手致意，而且给我让开了很宽的道路。
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