Meaning of dūn:
dūn
吨
Measure Word
ton (loanword); Taiwan pr. [dun4]
Zhè sōu chuán néng zài liǎng qiān dūn huòwù.
这艘船能载两千吨货物。
This ship can carry two thousand tons of cargo.
Zhè sōu chuán kěyǐ chéngzài 5000 dūn de huòwù.
这艘船可以承载5000 吨的货物。
This ship can carry 5000 tons of cargo.