“描述性”造句

描述性的生态学是干燥无味的课题.
Descriptive ecology is a dry subject.

一种附加的描述性的解释或说明性注解.
An added descriptive comment or explanatory note.

前者一般认为属于正统的描述性编目范畴.
The former is said to come within the realms of orthodox descriptive cataloguing.