正在稻子成熟准备收割时，遭受了台风的袭击。
The typhoon struck just as the rice was ripe for harvesting.
它们都是准备充分和成熟的领域，有效的干预措施可产生巨大的回报。
Both are fully ready and mature areas for efficient interventions with a huge return.
经过长时间准备，现在两国签署纲要的时机已成熟。
After a long period of preparations, it is now the ripe time to sign the plan.
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