a.

1. 直立的，竖立的
   short, upstanding hair

   直竖的短发

2. 挺拔的；强健的
   In front of his house are two upstanding trees.

   他房子前长着两棵挺拔的树。

3. 诚实的，正直的
   He is a decent upstanding young man.

   他是一个正派诚实的年轻人。

adj.

1. honest and respectable.
2. erect.
3. (of an animal) strong and healthy.