In north america more than 70 different railway times were in use up to 1882 . 到1882年为止，北美使用过70多种铁路时间。
They identified the surplus over the resources used up in production as the source of accumulation . 他们将超过消耗于生产的资源剩余视为积累的来源。
On this occasion , however , it had slowed down considerably . the petrol had nearly all been used up . 不过这次速度大大放慢了。汽油已差不多用完了。
This relationship becomes of greater importance as the sow becomes older and the body reserves of fat are used up . 这种关系在母猪年龄较大而体内脂肪储备用完时显得更为重要。
It is "gross" because it does not deduct any charge for the depreciation of capital used up in the course of this production . 它由于未扣除该生产过程中资本损耗的折旧费用而被称为“总值”。
Individuals crossing exclusively within the same population produce more progeny than those crossing in both directions and thereby use up some of their gametes for the production of inviable hybrids . 完全在同一种群内进行杂交的个体比以两个方向进行杂交的个体繁殖后代要多，因此为了产生无生机的杂种，就要消耗掉一些配子。
He used up all your savings and now he ' s gone 他把你的钱都用完了，人就不见了。
I do wish you wouldn ' t use up all the hot water 我真希望你不要把热水都用完了。
Call me lucky , because i used up the last plank 我很幸运,因为我用尽最后板条。
Yeah . i used up all my vacation days , but it got done 用了我整个假期但我做到了
