four-by-four 或 4 × 4

four-by-four的音标和读音：
DJ音标发音： [ˈfɔ:rbaiˌfɔ:r, ˈfourbaiˌfour]
KK音标发音： [ˈfɔrbaɪˌfɔr, ˈforbaɪˌfor]

four-by-four的词性：
n.（名词）

1. A four-wheel drive motor vehicle.
四个轮子的机动车