Nonremunerative
无偿的, 不合算的
🗣️ 情景例句
It's me, Grandpa.
是我， 爷爷。
The eye that sees all things else sees not itself.
眼睛能看见一切的东西，但看不见自己。
Past experience has taught us that certain accomplishments are beyond attainment.
以往的经验告诉我们有些事是办不到的。