Light can be trusted to curve only in a vertical plane.

可确信光线仅在垂直面内作曲线传播.

辞典例句

Especially suitable for spraying vertical plane.

特别适用于喷射垂直面.

互联网

A length of aluminum tubing , flattened tip in a vertical plane, serves as a pointer.

端点沿直面压扁的一段细铝管, 作为指针之用.

互联网