It's always upward sloping, but it may, after awhile, you get close to satiation where you've got enough.

斜率永远是正的,但是也有可能,你拿的钱够多,效用将不再上升

耶鲁公开课 - 金融市场课程节选

It's close by. BJ's is always really good, so.

离得近。BJ's总是很好。就这样。

与室友和睦相处 - SpeakingMax英语口语达人

With such European pedigree on the pitch it was always likely to be a close encounter and so it proved, although Toulouse enjoyed much the better of the opening stages.

BBC: Munster 16-13 Toulouse

"Federer-Murray, when they're playing it's always very close, " he said, confirming he'd be closely watching the match.

NPR: Azarenka Eludes Chokehold, Gains Australian Final

It has always been in close cooperation not only with other partnering countries, which certainly includes the United States, but with the International Atomic Energy Agency and international fora.

WHITEHOUSE: Press Briefing