n.吨,公吨( tonne的名词复数 );
例句:
a record grain harvest of 236m tonnes
2.36亿公吨创纪录的谷物收获量
China produced about 143 m tonnes of corn last year.
中国去年玉米产量约为1.43亿吨.
It is 58.4 metres high and weighs 14,700 tonnes.
它有58.4米高,重14700吨.