持续六个月至一年的成熟堆肥会比较稳定。

Ripened composts that have taken six months to a year are more stable.

youdao

这项研究做得很好，不过只持续了六个月。

The study was well done, but it lasted only six months.

youdao

这项研究做得很好，不过只持续了六个月。

The study was well done, but it lasted only six months.

youdao