energy

n.

1. 活力, 干劲, 能力
   • He is full of energy.
     他充满了活力。
2. 精力
   • As people approach old age, their energies may diminish.
     接近老年时, 人的精力就衰退了。
3. 〈物〉能, 能量, 能源
   • Plants absorb energy from the sun.
     植物吸收太阳的能量。