咔嗒

kǎ chē kā dā kā dā de cóng lù miàn shang kāi guò

卡车咔嗒咔嗒地从路面上开过。

The truck clattered over the road.

suí zhe jīn shǔ pèng jī de kā dā shēng dà mén dǎ kāi le

随着金属碰击的咔嗒声，大门打开了。

There was a metallic click and the gates swung open.