Occasionally hospitalization is required to combat dehydration.

治疗脱水有时需要住院。

《柯林斯英汉双解大词典》

Elite combat professions generally required the mastering of a particular style of combat, or with certain types of weaponry.

精英战斗职业普遍要求玩家掌握一个特定的格斗类型，或者某种武器类型。

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Years, not months, are required to produce a close-combat soldier with the skills and attributes to perform the increasingly more difficult and dangerous tasks that wait in the future.

培养出一个掌握近战作战技巧并且能够在未来执行危险程度与困难程度都与日俱增的任务的士兵，需要好几年时间而不只是几个月。

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The availability of forces from coalition partners could make the difference to the ability to achieve the required combat capability for two MRCs.

CENTERFORSECURITYPOLICY: Section IV: Building a Two-MRC Force for the 21st Century

Effective law enforcement with appropriate training and funding is required to combat the illegal trade.

BBC: Quiz the experts on the ivory trade

Their stock markets topped out in November and are down 10% to 17%, on concerns about the rising interest rates and tighter monetary policies that have already begun, required to combat the inflationary pressures.

FORBES: China Is The 800-Pound Inflation Gorilla Across The Globe