species

• More than 50 species of this plasmodium attack animals .
  有50多种这样的疟原虫侵害着动物。
• They are explainable as a species of mental atavism .
  这些都可以解释为一种精神的返祖现象。
• Pleistocene glaciation caused the extinction of many species .
  第四纪冰期，使许多物种绝灭。
• Among the blue-green algae are many species of nitrogen fixation .
  许多种蓝藻有固氮的能力。
• " fishes " is used to refer to different species of fish .
  “Fishes”是用以指鱼的不同品种。
• the unionized sulfur species is in water.
  溶于水中非电离形式的硫即。
• The carbon should be susceptible to attack by a nucleophilic species .
  碳容易被亲核试剂进攻。
• Tropical america is the home of several other pine species .
  热带美洲是另外几个松树种的故乡。
• The odd oxygen species interconvert into each other rapidly .
  奇氧物质彼此之间很快地相互转化。