zhè / xiē / tōng / shāng / kǒu / àn / jiàn / zhèng / le / jìn / dài / zhōng / guó / yǔ / wài / guó / de / mào / yì / wǎng / lái

这些通商口岸见证了近代中国与外国的贸易往来。

These treaty ports witnessed trade between China and foreign countries in modern history.