With a standard drop-down list, the user is limited to choices in the list, but with a combo box, the user can enter a value that is not in the list.
通过标准的下拉列表，用户只能够选择列表中的选项，但是如果使用组合框，那么用户就能够输入一个列表之外的值。
You use this list to populate the drop-down combo box for the view against which your mail rules execute.
使用该列表来填充(对其执行邮件规则的)视图的下拉组合框。
Rational Team Concert does not recognize this check box; Rational Team Concert allows multiple values for parameters shown as a list box and single values for parameters shown as a combo box.
Rational Team Concert并不会识别到该复选框；rational Team Concert支持参数的多个值显示为一个列表框，而参数的单个值显示为一个组合框。
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