本期内容：

Donald Trump swept to victory in Tuesday’s Republican caucuses in Nevada, following his primary triumphs in New Hampshire and South Carolina. The front-runner in the race for the party’s nomination for the American presidency scooped 46% of votes—more than 20 points ahead of Marco Rubio, who narrowly beat Ted Cruz for second place.

词义解析:

Sweep to vitory：连胜
Caucus：党团会议
Primary：党内初选
Triump：胜利
Nomination：提名
Scoop：斩获