Check boxes with large fonts won't help a visually impaired user if he can't tell whether the check box is checked or unchecked, because the size of its icon has remained unchanged.
如果弱视用户不能辨认某个选框是否被选中，那么即使是带有大字体的复选框对他(她)来说也是毫无用处的，因为其图标的尺寸没有改变。
You can define the column attachment as BLOB, but because this field holds only the icon and related text for the attachment and not the actual attachment, you don't need it to be so large.
可以将列attachment定义为BLOB，但是因为此字段仅存储附件的图标和相关文本，而不是实际附件，所以不需要这么大。
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