光线投射的英文：
ray cast
n. 射线；光线；一线；鳐
v. 放射，辐射；照射；闪现
- Bear in mind that the chief ray is now principal ray.
记住，此时主光线就是主点光线。 - externo-lateral ray
外侧辐肋 - concrete for radioactive ray shielding
放射线屏蔽用混凝土 - The moon is raying across the bay.
月光照射着整个海湾。 - The researches are concerned with alpha rays.
这些研究都是关于阿尔法射线的。
v. 投掷；铸造；计算；投；投射；脱落；挑选；制定；垂钓；描述；（使）弯曲
n. 演员阵容；铸型；特性；投掷
- The die is cast
木已成舟 - The die is cast.
木已成舟。 - The priestly caste does not normally intermarry with the warrior caste.
教士阶级通常不与武土阶级通婚。 - A mould for casting—as statues were cast in bronze in mould
熔铸模型 - The athlete is practising casting the discus.
运动员正在练习掷铁饼。