They are nearly all shirtless as the tunnel is hot and humid and it is too warm to wear much clothing.

他们几乎都是赤膊，因为隧道里又热又潮湿，穿太多衣服会很热。

youdao

They are nearly all shirtless as the tunnel is hot and humid and it is too warm to wear much clothing.

他们几乎都是赤膊，因为隧道里又热又潮湿，穿太多衣服会很热。

youdao