藏量

xǔ duō shí yóu cáng liàng tài xiǎo zhì dì tài bù chún

许多石油藏量太小，质地太不纯。

Many of the oil deposits are too small, too impure.

dà liàng shí yóu hé tiān rán qì cáng liàng

大量石油和天然气藏量

large oil and gas reserves