middling

1. ADJ If you describe a quality such as the size of something as middling, you mean that it is average. 中等的; 普通的; 一般化的[usu ADJ n]

The Beatles enjoyed only middling success until 1963. 直到1963年，甲壳虫乐队的成功还只是一般般。

...a man of middling height. ...一名中等身材的男子。