n.

1. 远足；短途旅行[C]
   We are planning for our excursion next week.

   我们正在为下周的远足作准备。

2. 远足队，旅游团[C]
3. 离题[U][（+from）]
   Your comments are an excursion from the major theme.

   你的话偏离了主题。

n.

1. a short journey, especially one taken for leisure.
2. a deviation from a regular activity or course:
   the firm's disastrous excursion into the US electrical market.
   ▸technical a movement along a path or through an angle.