英语听力精选进阶版 13712（在线收听）

US healthcare on a knife edge

Vocabulary

contentious

controversial

aspects

parts, features

in the teeth of vociferous opposition

despite very loud and outspoken criticism

sharply divided

split into groups that disagree strongly

provision

clause in a legal document

mandate

order, rule

numerous

many

justices

judges

oral

spoken

swings into full gear

gathers pace