to ripen; to mature
to be ready for action; to be the right time (to act)
to be in common use; to come to sound natural
to become skilled
時機がようやく熟した。
The moment finally ripened.
夏の日差しでトマトが熟している。
The tomatoes are ripening in the summer sun.
果物は収穫後も熟するので温度管理が大切だ。
Fruit continues to ripen after harvest, so temperature management is important.