sharp line spectra 锐线光谱
sharp line source 锐线光源
sharp line 锐线 ; 锐
sharp pencil line 细铅笔线
a sharp out line 明晰的轮廓
I snapped this coming down from our first run, the sharp line at the top of the cloud bank made it seem like a sea that was slowly encroaching on the hut at the base of the lift.
我回到上山的山路上拍了这张照片，云堤最高位置的清晰线使它像一个海洋，它缓慢地渗入电梯底部的小屋。
So the previously sharp line between angels and VCs has become hopelessly blurred.
因此过去天使与风投之间的明显界限已经变得模糊得不像样了。
Not until the 18th century did labor begin to be divided along a sharp line: wage-earning for the men and unpaid maintenance of household and children for the women.
直到18世纪家庭分工才有了清晰的界限：男人负责赚钱养家，女人做家务带孩子。
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