Train Travel Air Travel
乘飞机旅行好;
坐火车旅行还是乘飞机旅行-;
坐火车旅行还是乘飞机旅行好;
Honk Travel Honk Travel
嘟旅嘟旅;
汽车喇叭声;
travel agency travel bureau
旅行社;
contingency plan or workaround plan
变更 应对风险的紧急计划或回避计划;
economic activities outside the plan will bring pressure to bear on those within the plan
计划外冲击计划内;