Were they salt domes such as are common along the United States Gulf Coast, and if so, why should there have been so much solid crystalline salt beneath the floor of the Mediterranean?

它们是在美国墨西哥湾沿岸的那种很常见的盐丘吗？如果是的话，为什么地中海海底会有这么多坚硬的结晶盐呢？

youdao

Spartina alterniflora, known as cordgrass, is a deciduous, perennial flowering plant native to the Atlantic coast and the Gulf Coast of the United States.

互花米草，又称绳草，是一种落叶的多年生开花植物，原产于美国的大西洋沿岸和墨西哥湾沿岸。

youdao

The United States has welcomed the stated commitments of key Gulf Allies including Saudi Arabia and Bahrain to set up embassies in Baghdad.

美国对主要的海湾盟国，包括沙特阿拉伯和巴林发出的准备在巴格达设立使馆的承诺表示欢迎。

youdao

The spill may be occurring along the Gulf coast of the United States, but experts say it is an international problem.

VOA: standard.2010.06.08

The U.S.and Iran are entangled in a dispute over the Persian Gulf nation's nuclear program, which the United States contends is a cover for developing weapons.

VOA: standard.2009.03.21

Reports that al-Qaida-trained operatives may be poised to attack American commercial and passenger vessels in the Arabian Sea are being widely circulated in Arab-speaking Gulf states, including Kuwait,Bahrain,Qatar, and United Arab Emirates.

VOA: standard.2010.01.07

We have seen the President of the United States terminate the Gulf War with excessive haste on the erroneous assumption that Saddam could not survive to do much additional harm.

CENTERFORSECURITYPOLICY: Freedom Flame 2013

The 1, 700-mile Keystone XL pipeline project -- which would extend current oil pipeline networks from Alberta, Canada's bitumen-filled ground, all the way across the United States to the Gulf of Mexico -- exposed partisan and regional divisions within Congress during Obama's first term.

CNN: STORY HIGHLIGHTS

Other areas could be attacked by shorter-range missiles launched from ships off the United States' East and Gulf coasts with little, if any, probability of interception.

CENTERFORSECURITYPOLICY: Center For Security Policy