If early humans hadn't moved and intermingled as much as they did, they probably would have continued to evolve into different species.
如果早期人类没有像以前那样频繁地移动和融合，他们可能会继续进化成不同的物种。
Even if early man could not see virus or bacteria, he was confronted with their lethal impact.
即使早期人类无法见到病毒或细菌，也面临着其致命影响。
If early engineering phases are overconstrained, development organizations will set up intermediate checkpoints that are less ambitious.
如果早期工程阶段受到过分限制，开发组织建立的中间检查点将不会那么有抱负。
He expressed great alarm at his pastor's state of health, but was anxious to attempt the cure, and, if early undertaken, seemed not despondent of a favourable result.
他对他的牧师的健康深为震惊，还急切地给予治疗，他认为，如果及早诊治的话，总不会不见疗效的。
If early oceans carried organic molecules-and they most likely did-the porous surfaces of shoreline minerals could have helped organize such building blocks into primitive structures.
如果早期的海洋内含有有机分子，而这也是非常可能的，海岸线上矿物质的疏松表面可以帮助这些有机分子有机构建成原始的结构。
Third, and massively important, if early life started as sketched above, a “Darwinian transition” to cells that use DNA, RNA and code for proteins via a genetic code must take place at some point.
重要的是，如果早期生命以如上所述的方式开始，细胞的使用DNA，RNA和蛋白质代码的“达尔文过渡”，必须在某个时候通过遗传密码发生。
Most skin cancers are completely curable if detected in the early stages.
大部分的皮肤癌若在早期发现都能完全治愈。
If you believe you will live longer, then options become more valuable, and early commitment becomes less attractive.
如果你认为你自己会活得更久，那么选择就会变得更重要，而早期的承诺就会变得不那么有吸引力。
If we want to arrive at ten, I don't think it's necessary to set off so early.
如果我们想十点钟到达，我认为没有必要那么早出发。
If it is cut in a plane different from the one used by the early investigators, it will not form two whole embryos.
如果在一个不同于早期研究人员所使用的平面上切割，就不会形成两个完整的胚胎。
If Earth's orbit were only 5 percent smaller than it is, temperatures during the early stages of Earth's history would have been high enough to vaporize the oceans.
如果地球的轨道比现在小5%，那么地球历史早期的温度就足以使海洋蒸发。
This raised the question if the design of a shoe was an evolution of the early sandal and how can new materials and design techniques provide new solutions?
这就提出了一个问题，如果鞋子设计想在早期凉鞋的基础上有所改进，新材料和设计技术如何提供新的解决方案？
If Simon had not, early in life, learnt to be content with his life, he might never have been given those chances.
如果西蒙在早年没有学会满足于自己的生活，他可能永远不会有这样的机会。
So if you believe you will live longer, then options become more valuable, and early commitment becomes less attractive.
因此，如果你相信你自己会活得更久，那么选择就会变得更有价值，而早期的承诺就会变得不那么有吸引力。
A headache is important because it can be the first warning of a serious condition that could probably be controlled if discovered early.
头痛得重视，因为它可能是一种严重疾病的第一个预兆，如果及早发现的话，这种严重疾病可能会得到控制。
In this, he synthesized all his tricks from Drury Lane: mechanical motions, sound, light, other special effects to create, if you will, an early multimedia production.
在这部作品中，他综合了德鲁里巷中用到的所有技巧——包括机械运动、音效、灯光，以及其他特效，（可以说是）创作了一部早期的多媒体作品。
If you don't mind working in the kitchen, we've got some pretty flexible hours for students doing food-prep work, anything from early morning to late afternoon.
如果你不介意在厨房里干活，我们负责备餐的学生工作时间是很灵活的，从一大早到傍晚的任何时间都没有问题。
Nearly a century ago, biologists found that if they separated an invertebrate animal embryo into two parts at an early stage of its life, it would survive and develop as two normal embryos.
近一个世纪前，生物学家发现，如果他们在无脊椎动物胚胎生命的早期阶段将其分成两部分，它会存活下来并发育成两个正常的胚胎。
On top of that, I specifically asked if I could leave early last Friday as I'd done a lot of overtime during the week.
除此之外，上周五我明确地问过是否可以早点下班，因为我当周加了很长时间的班。
Some research suggests if we're going to eat sugary foods, it's best to do it early.
一些研究表明，如果我们要吃含糖食物，最好尽早食用。
But some research suggests if we're going to eat sugary foods, it's best to do it early.
但一些研究表明，如果我们要吃含糖食物，最好尽早食用。
And if I have a fancy for dyeing my hair, or going to bed late or getting up early, I shall follow my fancy and ask no man's permission.
如果我想染头发，想晚睡或早起，我就随自己的心意去做，不征求任何人的同意。
The sign on my store says the hours are ten to six, but if business is slower than usual, I can just lock up and take off early.
我商店的招牌上写着工作时间是10点到6点，但是如果生意比平时少的话，我就可以提前锁门离开了。
Well, the sign on my store says the hours are ten to six, but if business is slower than usual, I can just lock up and take off early.
嗯，我商店的招牌上写着工作时间是10点到6点，但是如果生意比平时少的话，我就可以提前锁门离开了。
If you take the bus, try getting off one stop early and walking the extra distance.
如果你坐公共汽车，试着提前一站下车，然后走多一段距离。
Now, only 3 percent of families follow the agricultural model, but nearly all schools are scheduled as if our children went home early to milk the cows and took months off to work the crops.
现在，只有3%的家庭遵循农业模式，但几乎所有的学校都安排得好像我们的孩子要早早回家挤牛奶，或者花几个月的时间种田一样。
If you start doing this at an early age, you will not have to depend on your parents too much.
如果你在很小的时候就开始这样做，你就不会太依赖你的父母了。
If you don't book early, the programs may become fully booked.
如果你不及早预订，这些项目可能会被订完。
If you don't catch the early bus, you'll be late.
如果你赶不上早班车，你就会迟到。
If you don't catch the early bus, you'll be late.
如果你赶不上早班车，你就会迟到。
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