present in

• Sensory nerve endings are present in the teat .
  感觉神经末梢是在乳头上。
• Viruses may be present in tapwater .
  病毒可以存在于自来水中。
• Mitochondria are present in all eukaryotic cells .
  一切真核的细胞都有线粒体。
• Repeated sequences are often present in the genome .
  基因组内常常有重复性序列。
• All organisms have nucleic acids present in their cells .
  所有生物的细胞中都有核酸。
• Several reducible ions are present in the solution .
  溶液中同时存在几种可还原的离子。
• He is at present in shanghai .
  目前他正在上海。
• Tremolite laths and serpentine minerals are present in places .
  有的地方出现透闪石板条及蛇纹石。
• The u.s.constitution was presented in a positive light .
  对于美国宪法，是用肯定的态度予以介绍的。
• After cancellation, the factor is still present in the denominator .
  相消后该因子仍存在于分母中。