upbeat

up, 向上，beat, 击打。原为音乐术语，乐声激昂曲调，引申词义乐观的。

upbeat (adj.)

"with a positive mood," 1947, apparently from on the upbeat "improving, getting better," attested from 1934 and a favorite of "Billboard" headline-writers in the early 1940s, from the musical noun upbeat (1869), referring to the beat of a bar at which the conductor's baton is in a raised position; from up (adv.) + beat (n.). The "optimistic" sense apparently for no other reason than that it sounds like a happy word (the musical upbeat is no more inherently "positive" than any other beat).

1. Neil's colleagues say he was actually in a joking, upbeat mood.

内尔的同事们说他实际上在说笑逗乐，心情不错。

2. Scientists remain upbeat about the information that will be gathered.

科学家对即将收集到的信息仍满怀希望。

3. The Defense Secretary gave an upbeat assessment of the war so far.

国防部长对目前的战事给予了乐观的评价。

4. The tone of the speech was upbeat.

这次讲话的语气颇为乐观。

5. The Chancellor's upbeat message that the Government had licked inflation for good was marred by more job losses.

总理乐观地声称政府已经一劳永逸地解决了通货膨胀问题，但更多人的失业却令这一消息大为减色。