AP News:司法部检察长发布报告指责联邦调查局

1.The President has repeatedly vowed to clamp down on what he considers unfair Chinese trading practices.

clamp down on （对…）进行压制（或取缔）

Those who clamp down on internet freedom may be able to hold back the full expression of their people's yearnings for a while, but not forever.
那些箝制互联网自由的政府或许可以在短时间内使人民无法充分表达自己的意愿，但不可能永久。

2.And a roller coaster derailed and was left dangling in Daytona Beach in Florida.

derail 脱轨

The streetcar was derailed by a stone lying across the rails of a track.
由于一块石头横卧在轨道上，有轨电车出轨了。