roundtrip 或 round-trip 也作 round trip
n.(名词)
A trip from one place to another and back, usually over the same route.
通常沿相同路线的来回旅行,双程旅行
n.attributive.(定语名词)
Often used to modify another noun:
常用作修饰另一名词:
例句:
roundtrip flights; round-trip tickets; round trip passengers.
往返飞行;往返票;双程旅行的乘客