要明白数组与集合的区别需要弄清楚顺序和位置的不同。
The trick to differentiating collections from arrays is knowing the difference between order and position.
要确定数字标牌对客户来说是否是合适的选择，标识制作商就必须询问清楚，客户要在哪个位置将动态内容叠加在现有静态标识环境中，从而达到良好的商业宣传效果。
To determine if digital signage is a natural fit for their customers, signmakers must ask where it would make good business sense to add dynamic content to an existing static signage environment.
它应该是容易理解的，并且要清楚地表示出衣袋、省道的位置、衣领式样以及衣袖宽度，等等。
It should be easy to understand and clearly indicate the position of pockets, darts, type of collar, width of sleeve, etc.
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