there are several造句

• There are several possible explanations .
  存在着几种合乎情理的解释。
• There were several doors with brass knobs .
  那儿有好几扇门，门上有铜把手。
• There are several weak spots in your argument .
  你的论点中有几处经不起推敲。
• There are several species differences .
  有好些种族差异。
• There are several different implementation of this method .
  对该方法还有一些补充。
• There are several other excretory mechanisms in earthworms .
  蚯蚓有好几种排泄机制。
• There are several species of maple trees that are tapped .
  产枫浆的枫树有好几个品种。
• Despite these success, there are several problems .
  尽管有了这些成就，但还有几个问题。
• There are several different detectors in common usage .
  有几种不同的检测器可供平常使用。
• There are several hurdles to be got over in this project .
  在这项工程中有一些困难要克服。
• There were several close finishes during the competition .
  那几个参赛者在比赛临近结束时成绩极接近。
• There are several reasons for this swing toward diesel engines .
  这种向柴油发动机方向的发展有几个原因。
• There are several types of excitation to which structures may be subjected .
  结构可能受到的激励有几种类型。
• There are several other substances which display similar characteristics .
  还有另外一些材料也有类似的性质。
• There are several possible explanations for such a negative result .
  对于这一否定性的结果，有几种可能的解释。
• There are several examples of a one-carbon degradation leading to aldehydes .
  有一些减少一个碳原子制备醛的实例。
• There are several possible avenues for improving the productivity of agricultural land .
  提高农田生产率有几种可行的途径。
• There were several places where herb might be lurking, and she knew them all .
  赫伯可能去混的有好几个地方，她都知道在哪里。
• There are several mountain ranges with interspersed areas of grassland and desert .
  这儿有几个山区，其间散布着多块草原和沙漠。