英语语法分析

We must find economical methods for extracting oil from shale.

我们必须找到从页岩中采油的经济方法。

《新英汉大辞典》

The North American shale gas boom has resulted in record low prices there.

北美页岩气的繁荣导致那里的价格创新低。

The Burgess Shale formation also has fossils of many extinct representatives of modern animal groups.

伯吉斯页岩地层中也有许多代表着现代动物群中已经灭绝的物种的化石。