crucial

• Neither the upper bend of the don, nor the crucial land bridge, had been secured .
  上游的顿河河曲和关系重大的陆口桥梁此时都未到手。
• This should be the aim over the next decade, it is crucial to our survival .
  这应该成为今后十年的奋斗目标，它关系到我们的生死存亡。
• The crucial episodes in the story remain sharply etched in the reader's mind .
  故事中重要的场面都在读者的脑海里留下了十分深刻的印象。
• He could not control his hands, and the package fell and the crucial book fell onto the floor .
  他双手直发抖，把箱子弄翻了那性命攸关的书掉在地上。
• Turning agents into double agents instead of hanging them has two crucial advantages .
  不把间谍处死，而是把他们转变为双重间谍可以得到两个非常大的好处。
• He spoke briefly but grasped the essence of the problem , and brought out the crucial point ...
  话虽然简短，但是抓住了问题的本质，起到了画龙点睛的作用。
• He meets squarely the crucial question of a man's responsibility for making so serious an error .
  他勇敢地面对男人犯了如此严重错误应负什么责任的严酷问题。
• At this crucial moment canada was ready to play a conspicuous part in the deadly struggle .
  在这危急万分的时刻，加拿大准备在这场生死攸关的斗争中担任重要角色。
• The crucial event in spacetime involves the destruction of one particle and the creation of three other .
  空时中的重要事件包含着一个粒子的消灭和3个粒子的产生。
• It was crucial that our negotiating record be above reproach to withstand the domestic fury ahead .
  关键的是，我们的谈判记录是无可指责的，能顶得住今后国内的愤怒。