Nonremunerative
无偿的, 不合算的
🗣️ 情景例句
not music or dancing or entertainment.
而不是音乐， 舞蹈或者娱乐。
I took 6 boxes of biscuits.
我拿了六盒饼干。
Even if a piped water supply is safe at its source,
既使管道供水系统在水源处是安全的，