英文是20 tons
They eat bamboo at least 20 tonnes every day .
They eat every day for at least 20 tonnes of bamboo
They eat at least 20 tons of bamboo every day.
海运里的箱重等级是这样的L - Light container轻重柜(10吨以下)M - Medium container中重柜(10吨-15吨)H - Heavy container重柜(15吨-20吨)X - Extra-heavy container超重柜(20吨-25吨)U - Ultra-heavy container极重柜(25吨以上)
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为爱浪漫1
