为了执行一次扫掠，用户需要指定一个运动矢量，它指出了方向和将要用于扫掠的路径长度。
When performing a sweep the user specifies a motion vector, this specifies the direction and magnitude of the path the objects is swept over.
它具有一种深沉、日常的色泽，与灰暗的苍穹浑然一体，构成庄重却非一眼可见的和谐，故而在浏览扫掠的目光看来，可能会有阳春繁景过后的平淡之感，一如黎明之后十一时的光景。
It has a darkened and a daily colour, in majestic but not obvious harmony with dark grey skies, and might look, to inconstant eyes, as prosaic after spring as eleven o'clock looks after the dawn.
将条形码读入器的端部在商品标签、信用卡和雇员证的磁性编码条纹上扫掠。
Pass the tip of a wand reader over a magnetically encoded stripe of a merchandise ticket, credit card, or employee badge.
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