Among the following statements, which are true ones?

A.In transit terms, a "car" means a single rail vehicle.

B.The word "train" comes from a Latin word.

C.The word "train" originally means "to connect".

D.In transit terms, a train means multiple rail cars connected together.

正确答案：In transit terms, a "car" means a single rail vehicle.；The word "train" comes from a Latin word. ；In transit terms, a train means multiple rail cars connected together.