The number equal to 4; two plus two.

• The value after three and before five.
• Describing a set or group with four elements.

数字4；二加二。

• 介于三之后、五之前的数值。
• 表示由四个元素构成的一组。

The digit or figure 4; an instance of it.

• Four o'clock.
• A person aged four years.
• Cricket: a shot that scores four runs (boundary).
• Rowing: a boat for four rowers, or its crew.
• Basketball: the power forward position, the four.

数字4；其一次出现。

• 四点钟。
• 四岁的人。
• 板球：击球得四分的球（越界前落地）。
• 赛艇：四人赛艇或其船员。
• 篮球：四号位，大前锋。