1. A dearth of local refineries makes the region dependent on pipelines and tankers for oil products.
a dearth of 缺乏
There was a dearth of reliable information on the subject.
关于这个课题缺乏可靠资料
。2. he Transportation Security Administration (TSA) is supposed to help safeguard oil and gas pipelines
supposed to 应该
I was supposed to be writing a letter but I'm afraid I got sidetracked.
我本来应该在写信,但后来恐怕是分心干别的去了
。3. But they pose a particular headache for President Joe Biden, who is trying to win support for climate proposals in his $2trn infrastructure bill.
a headache for 对…来说感到头痛
The problem of unemployment is a big headache for the government.
失业对政府来说是一件大伤脑筋的事
。