mole mass

例句：

1. 1. The mole tunnels through the ground to avoid predators.
   鼹鼠通过地下隧道来躲避捕食者。
2. 2. The mole is a small mammal that lives underground.
   鼹鼠是一种生活在地下的小哺乳动物。
3. 3. The mole has a unique ability to sense vibrations in the ground.
   鼹鼠具有在地面感知振动的独特能力。