这辆车的载重量是五吨。
zhè liàng chē de zǎi zhòngliàng shì wǔ dūn 。
The load capacity of this vehicle is five tons.
他买了十吨水来灌溉田地。
tā mǎi le shí dūn shuǐ lái guàngài tiándì 。
He bought ten tons of water for irrigation.
这台机器重三吨,搬运起来很困难。
zhè tái jīqì zhòng sān dūn , bānyùn qǐlái hěn kùnnán 。
This machine weighs three tons, making it difficult to move.