ripe

Wait until the bananas turn yellow and have a few spots; that's when they are ripe.

(Chinese) 等到香蕉变黄并出现一些斑点，那就是成熟的时候。

The corn is ripe and ready to be harvested before the first frost arrives.

(Chinese) 玉米已经成熟，准备在初霜到来前收割。