Despite lack of forced ventilation of special envelope seals the running costs are very low.

尽管缺乏特殊表皮的强制通风设备，运行的花费还是很低的。

youdao

Despite lack of forced ventilation of special envelope seals the running costs are very low.

尽管缺乏特殊表皮的强制通风设备，运行的花费还是很低的。

youdao