First things first, here's a plain fact.

首先，事实显而易见。

Since the dawn of human ingenuity, people have devised ever more cunning tools to cope with work that is dangerous, boring, burdensome, or just plain nasty.

最初有了智慧至今，们一直在设计日益巧妙的工具来处理那些危险的、枯燥的、繁重的或者只是一般肮脏的工作。

Seventy percent of the world's population lives on coastal plains.

全球70%的口住在沿海平原。

Finally, don't forget about potassium-rich foods like bananas, salmon and plain yogurt.

最后，不要忘记富含钾的食物，如香蕉、鲑鱼和原味酸奶。

Two and a half million people abandon the great plains.

二百五十万民离开了这片广阔的平原。

What was more, he was now dreaming about walking down the corridor towards the entrance to the Department of Mysteries almost every night, dreams which always culminated in him standing longingly in front of the plain black door.

而且，他现在几乎每天晚上都梦见自己在走廊里朝秘事务司走去，最后总是渴望地站在那扇黑门前。

It makes wide bends or meanders through low valleys to the plains where rice grows.

河水变宽慢慢地穿过低谷，到了长着稻谷的平原。

Rising more than 1,000 feet in the middle of the gently rolling plains of Wyoming, the massive column of rock looks as though it was dropped down into this location from a different time and place.

在怀俄明州平缓平缓的平原中部上升了1000多英尺，大块岩石似乎不同的时间和地点下降到了这个位置。

The outstanding features of the plains are the river valleys.

平原的突出特征是那些河谷。

Most of its surface is dry, rocky desert plains.

它的大部分表面是干燥、多岩石的沙漠平原。

Plain water is just plain off limits.

只要是白水都不能喝。

The two astronauts seen emerging from the hatch of the Space Station to start their mundane sounding work, making history in the process , identified by their bulky spacesuits, Koch in the red stripes, Meir, plain white.

两名宇航员空间站的舱口出来，开始他们的探测工作，并在这过程中创造了历史，根据她们笨重的宇航服，我们看到了红色条纹的科赫和朴素白的梅尔。

Some pieces of silk were left plain.

一些丝绸制品保持了原样。

Negative 40 degrees Fahrenheit is possible in the plain states.

在平原地区，气温低至华氏零下40度也是有可能的。

Similar studies tested whether students learned basic physics and chemistry concepts better by reading plain text or viewing pictures too and everyone do better with the help of pictures.

相似的研究测试了与纯文字相比，图文并茂的习方式对生理解物理和化的基本概念是否有更好的帮助，结果显而易见。

Would your strokes be tremblingly timid or brilliantly bold? Fancy with a flourish or plain?

你的落笔会是颤抖胆怯的，还是鲜明果敢的？你的想象会是丰富的还是贫乏的？

These Indians followed the buffalo across the plains.

这些印第安跟随野牛跨过平原。

But on one day in particular, I just plain old chose control.

但特别是有一天，我只是简单地选择了控制。

And sometimes tech is just plain fun.

有些时候，科技也很有趣。

13,000 years ago, several different species roamed the plains.

一万三千年前，这个平原上奔驰着许多不同的物种。