With a VARCHAR, the number of characters can vary, and no extra padding is performed.
而使用 VARCHAR 时,字符的数量是可变的,不执行额外的填充。
Maven: No padding and lots of people get hurt.
美芬:恩,没有护垫,很多人会受伤。
Add some marginal padding, create a border, and make any other changes to your CSS rules; all of your pages will update immediately, with no effort on your part.
增加一些边界留空、建立边框或者对CSS规则作其他修改,所有页面立刻就会更新,不用费任何力气。
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