它们

• They are all descended from the rock-pigeon .
  它们都是从野岩鸽传衍而来。
• They should not be a threat to reconciliation .
  它们不应当威胁和解精神。
• In this case they were to be shadowed .
  在这种情况下，要对它们进行跟踪。
• Afterwards i allowed an ant to visit them .
  我于是让一只蚂蚁去接近它们。
• They are adapted for rough, heavy service .
  它们适用于粗糙、繁重的工作。
• He unhesitatingly ranks them as varieties .
  他毫不犹豫地把它们列为变种。
• They could be comprised in very few words .
  它们可用简单几句概括起来了。
• Their difference is a quadratic residue of 17 .
  它们的差是17的平方剩余。
• I'm glad you got them in on time. "
  我很高兴您及时把它们送来了。
• This deeper anxiety swallowed them up .
  更大的烦恼把它们淹没了。