重要的是要有效地利用时间。
这种毒品在大剂量使用时会引发幻觉。
这桌子不用时可以折叠起来。
第1个完成的女性是挪威的格雷特·瓦伊茨，用时2小时29分30秒。
The first woman to finish was Grete Waitz of Norway, with a time of 2 hrs, 29 min., 30 sec.
这些燃料在使用时更加环保。
凯茜总是很好地利用时间来学习，哪怕是在午休的时候。
Cathy always makes good use of her time to study, even during her lunch break.
你可以乘坐 C 号城际动车组或 D 号动车组从深圳到广州，用时更短。
You can take C Intercity EMU or D EMU to travel from Shenzhen to Guangzhou with less time.
研究表明，在世界各地，社交媒体的人均使用时长为每天2小时19分。
Research shows that, worldwide, the average person spends two hours and 19 minutes on social media each day.
当汤姆的父亲要求他支付其治疗费用时，他向他的父母抱怨说：“你们不但没有帮我，反而是我的负担！所以别再来找我了。”
When his father asked Tom to pay for his treatment, he complained to his parents, "You are not doing anything to help me, but instead are a burden to me! So, please don't come to me again."
这是无法用时间来衡量的。
然而，屏幕使用时间越长，幸福感越低。
However, higher doses of screen time were clearly associated with lower happiness.
他们吃饭用时更短短，洗澡时间也更短。
但是请记住，在引用时，一切都需要一致。
But remember, everything needs to be consistent when it comes to referencing.
日常使用时要小心。
作为交换，他们得到一些钱或其他的电脑使用时间。
当土地被开发为人类使用时，其地貌就会发生变化。
When land gets developed for human use, the landscape changes.
将走动管理和市场研究组合使用时，它们是强大的工具。
When using combination then, MBWA and market research are powerful tools.
如果我们想要有所收获的话，就必须善用时间、努力工作。
If we want to reap a harvest, we have to make the best of time and work hard.
当营养物质在环境中被反复使用时，我们称之为营养循环。
When nutrients are used over and over in the environment, we call that a nutrient cycle.
人们普遍认为，屏幕使用时间过长是当今年轻人不快乐的原因。
Too much screen time is widely believed to be the cause of unhappiness among today's young people.
等到这些“办法”被广泛使用时，骗子们就会使用更聪明的手段。
By the time these "solutions" become widely available, scammers will have moved onto cleverer means.
当一项技术得到应用时，技术带来的影响远远超出了其本身的效用。
When a technology is deployed, its impacts reach far beyond itself.
许多美国谚语都强调珍惜时间，合理利用时间，设定明确目标并为之努力。
Many American proverbs stress the value of guarding time, using it wisely, and setting and working toward specific goals.
此举是一种转变，即利用时装周走秀的报道，让消费者立即可以买到库存。
The move was a switch to leverage on the coverage of their fashion week show to make stock available immediately to consumers.
当杀虫剂在农场附近池塘的温暖封闭水域使用时，环境很可能对鱼是致命的。
In the warm enclosed waters of farm ponds, conditions are very likely to be lethal for fish when insecticides are applied in the vicinity.
较旧的生产技术往往继续产生毒性废物，这些废物在最初采用时没有受到管制。
Older production technologies often continue to generate toxic wastes that were not regulated when the technology was first adopted.
当植物吸收光进行光合作用时，它只吸收某些波长的光，并反射其他波长的光。
When a plant absorbs light for performing photosynthesis, it only absorbs some wavelengths of light and reflects others.
也许父母们可以不再那么担心屏幕使用时间，至少对年龄较大的男孩和女孩来说是这样。
Perhaps parents can stop worrying so much about screen time, at least for older boys and girls.
在一些专家和大众媒体中，最流行的解释之一是，过多的“屏幕使用时间”是罪魁祸首。
One of the most popular explanations, among some experts and the popular media, is that excessive "screen time" is to blame.
公交车和公交车专用道的数量增加了，司机们也根据其行程所用时间获得奖励或受到惩罚。
The number of buses and bus lanes were increased, and drivers were rewarded or punished according to the time they took.
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