It is realized by referring to a system formed by an ash bucket, ash storage pump, ash transporting pipe, and the air make-up pipe for compressed air.

该方法借助于灰斗、灰仓泵、输灰管、压缩气补气管组成的系统实现。

youdao

Subsidies make up part of the shortfall: water is sold for 5% of what it costs to pipe it, petrol at 11 cents a litre, and 40% of Libyans don't bother to pay for their state-supplied electricity at all.

ECONOMIST: Libya