egregious=outstandingly bad，flagrant（骇人听闻的）
The pollution caused by fossil fuels is egregious.
orphan wells= oil or gas wells that have been abandoned by fossil fuel extraction industries.废弃矿井，可数
Methane sometimes leaks from orphan wells.
sniff out= discover or detect sth，pv，vt，查出，发现
The policeman sniffed out the suspect’s lack of confidence.
frack= inject liquid into a subterranean rock formation, borehole（钻孔）etc. at high pressure so as to force open existing fissures and extract oil or gas.压裂（取油），vt
ripoff= a fraud or swindle, especially something that is grossly(极度地）overpriced.（定价过高的）诈骗，可数
iPhones are regarded as expensive ripoffs by some anti-fans（黑粉）.
pricing定价，不可数
Lei Jun，the founder of Xiaomi Technology，has been worrying about the pricing of their new product——electric cars.
chime in= interrupt插话，vi
Joe kept chiming in when his parents were discussing their holiday trips.
Gallivant= go around from one place to another in the pursuit of pleasure or entertainment.游玩，vi
One of Joe’s dreams is gallivanting around the world.
