Yàdàochē / jīngguò / hòu / gōngchéngshī / quèrèn / tiěguǐ / méiyǒu / míngxiǎn / wèntí

轧道车经过后，工程师确认铁轨没有明显问题。

After the track-inspection trolley passed, the engineer confirmed that the rails had no obvious problems.