You need to lift your head every now and then when you're reading, which is good for your eyes.
阅读时,你应该偶尔抬头,这对你的眼睛有好处。
Variables are always assigned by value, which means that when one variable is set equal to another variable, they are then independent of each other.
变量始终是由值指定的,这意味着设置一个变量等于另一个变量后,它们就相互独立。
I'm going to give it a 20-centimeter offset, which is here, and then I will start it when it comes back here.
我将给它,20厘米的偏移,在这里,然后当它回到这里,我开始计时。
But when we come to where the large significant populations are, which is the Congo basin, then we find that it's the bush meat trade that's the commercial hunting of wild animals for food.
VOA: special.2009.11.18
The glycemic affect is the extent to which this blood sugar effect occurs when people consume certain foods and then the glycemic index is just a number that gets attached to that.
血糖效应从某种程度上讲,是在人们进食,某些食物时出现的血糖波动,血糖指数则仅仅是这一效应的量化体现
So if we can get better at giving people triggers of when to leave early, which we will work very hard on doing, then people evacuating themselves is the safest thing to do as long as it's early enough."
VOA: standard.2009.06.24
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