strenuous

• He looked very earnest and strenuous .
  他那种神气非常认真，而且卖气。
• Poverty indeed is the strenuous life .
  贫穷实在是一种多艰的生活。
• Real life was gloomy and strenuous .
  真实的生活又沉闷又紧张。
• Both candidates conducted dignified and strenuous campaigns .
  两个候选人的竞选都庄重奋发。
• This form of recall provoked strenuous opposition from conservatives .
  罢免权的使用激起保守派的强烈反对。
• In the strenuous world it is the only safeguard of the flippant .
  在一个狂热的世界里，它是绕舌人唯一的防御。
• He never bit a person in the ten strenuous years that he lived .
  在他活着的紧张热烈的十年中，从未咬过一个人。
• The growing child can thrill with the exhilaration of strenuous sports .
  成长中的儿童会在剧烈运动中兴奋得发抖。
• It was evident that her physical strength could not support her strenuous task .
  繁重的工作显然使她有些力不胜任。
• They continued to issue proclamations to the whole country urging the most strenuous resistance .
  他们仍继续向全国发布命令，号召作最奋勇的抵抗。