trip为什么是名词

因为trip一开始就被定义为名词

例句

1、

He tried to organise things so that the trip would be dressed up as a UN mission.

他竭力筹备好各项事宜以便这次出行看上去像联合国代表团出访一样。

2、

The pluses more than compensated for the inconveniences involved in making the trip.

各种有利因素大大抵消了出行过程中的种种不便。