是以

• In some plants photosynthetic products are stored in the form polyfructosans .
  在有些植物中，光合作用产物是以多聚果糖的形式储藏。
• Settlement was accomplished, for the most part, by small groups of families .
  在大部分地区，定居是以小规模的家庭群体的形式完成的。
• These mechanisms rest on complete and detailed treatments of the burning process .
  这些机理是以燃烧过程的完整和详细的论述为根据的。
• In former times trade was based on bartering--goods were exchanged for other goods .
  以前，贸易是以易货（即货物交换）的方式进行的。
• The century ended with his final struggle and defeat by an industrial society .
  这一世纪是以他的最后斗争并被工业社会所击败而结束的。
• The catalyst for this reaction is iron chromium oxide with graphite as a binder .
  进行这种反应的催化剂是以石墨为粘接剂的铁铬氧化物。
• It was his intent to build on direct observation and avoid speculative hypotheses .
  他的意图是以直接的观察为基础而避免推测性的假说。
• Connally sought to cow opposition while nixon's strategy was to outmaneuver it .
  康纳利极力想把对方吓倒，而尼克松的方针是以谋略制胜。
• Special adaptations are represented by the swim and protective gear of the hydrochors .
  特殊适应是以水播植物的漂浮和保护机制为代表的。
• Near stalingard, the river don and volga converge in a very striking way .
  顿河和伏尔加河在斯大林格勒附近是以一种异常奇特的方式汇合的。