Contraction of front and side parts as cells die off was observed in some subjects in their thirties, but it was still not evident in some sixty and seventy-year-olds.
随着细胞的死亡，有些人大脑前部和侧部的收缩，在三十多岁时就能观察到，但是也有些人直到六七十岁依然不明显。
A black pickup truck turned off a side road in front of him.
一辆小型黑色货车在他前面拐进一条小路。
Its front-side LCD screen isn't visible when the camera is turned off, making for a surprising experience when you take pictures of friends who can suddenly see themselves.
相机关机时，前面的液晶屏就看不见了，这样当你给朋友拍照片时，他们会突然看到自己的样子，造成惊喜的效果。
It seems to me, prevention, if you can get on the front side of it, you're so much better off.
在我看来预防最重要，如果你能及早预防背痛，你的背就不会这么痛了。
And you get that reinforced on the very next page if you just skip over about a page from there: "a black pickup truck turned off a side road in front of him."
当你看到下一页时，这种感觉会加强，直接往后跳过一页：，“一辆小型黑色货车，在他面前拐进一条小路。”
He ran his tractor around the front of my house, piling the snow off to the side to allow me to drive out of the barn - my own personal snowplow.
他没有询问我，就把他的扫雪车开到了我的屋前，帮我把雪堆到了一边，以便我能开车出入车库，就像是我的个人雪犁一样。
The fanned air is then discharged from the front side of the base, blowing off saw dust on a cutting object so as to prevent dust from accumulating on a marking line on the cutting object.
扇动空气从底板的前端向前吹出，吹掉切割对象上的锯屑，从而防止锯屑聚集在切割对象上的标记线上。
The fanned air is then discharged from the front side of the base, blowing off saw dust on a cutting object so as to prevent dust from accumulating on a marking line on the cutting object.
扇动空气从底板的前端向前吹出，吹掉切割对象上的锯屑，从而防止锯屑聚集在切割对象上的标记线上。
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