ripe

mature, ripe

这两个形容词都含“成熟的”之意。
mature: 指生物完成了长生、发育的全过程或周期，表明已经成熟；也可指经周密、慎重考虑而制定的计划或作出的决定。
ripe: 主要指水果、谷物和蔬菜等的成熟，也可引申作“时机成熟”解。

形容词 ripe:

1. fully developed or matured and ready to be eaten or used
   同义词：mature
2. fully prepared or eager
3. most suitable or right for a particular purpose
   同义词：good, right
4. at the highest point of development especially in judgment or knowledge
5. far along in time
   同义词：advanced

1. The branches were weighed down with ripe apples.
   苹果成熟了把树枝都压弯了。
2. Most tomatoes are red when ripe, but some kinds are yellow.
   大多数西红柿成熟时是红色的，但有些品种是黄色的。
3. I like the luscious taste of ripe peaches.
   我喜欢熟桃的香甜味。
4. The ripe apples picked easily.
   成熟的苹果易于采摘
5. These apples are not ripe; they are sour.
   这些苹果不熟，是酸的。
6. The time was ripe for a challenge to the power of the government.
   时机已经成熟，可以向政府权力提出挑战了。

ripe

adj.（形容词）
rip.er,rip.est
Fully developed; mature:
成熟的：充分成长的；成熟的：
例句：
ripe peaches.
成熟的桃子

Resembling matured fruit, as in fullness.
结实的：象成熟的果实一样，如丰满的
Sufficiently advanced in preparation or aging to be used or eaten:
适于食用的，熟醇的：在准备或陈酿中足够完善来使用或食用的：
例句：
ripe cheese.
熟醇的奶酪

Thoroughly matured, as by study or experience; seasoned:
熟练的，老练的：完全成熟的，如通过研究或经历；成熟老练的：
例句：
ripe judgment.
成熟老练的判断

Advanced in years:
年富的，年高的：
例句：
the ripe age of 90.
九十岁高龄

Fully prepared to do or undergo something; ready:
准备完成的：作好充分准备做或从事某事的；准备好的：
例句：
.By 9'5 the republic was ripe for a coup.(Alex Shoumatoff)
.在9'5年，共和国发动了一次政变.(亚历克斯·肖马托夫)

Sufficiently advanced; opportune:
成熟的，发展充分的；适合的：
例句：
The time is ripe for great societal changes.
社会大变革的时机已经成熟了

Exhibiting overtones of or references to sex; scatological:
粗俗的，下流的：表现性的暗示或暗指性的；淫秽的：
例句：
.The language on the stage was riper than anything I have heard in a lifetime of newspaper work.(John Hughes)
.舞台上使用的语言比我这一辈子从报纸中听到的任何东西都要下流粗俗.(约翰·休斯)

Emitting a foul odor, especially body odor.
刺鼻的，难闻的：发出刺鼻难闻的气味的，尤指体臭

来源：
Middle English
中古英语
from Old English rope
源自 古英语 rope

【引伸】
ripe.ly
adv.（副词）
ripe.ness
n.（名词）