为了博得艺术爱好者的时间、注意力和金钱，古典乐器演奏家必须与歌剧院和剧团竞争。

For the time, attention, and money of the art-loving public, classical instrumentalists must compete with opera houses and theater companies.

youdao

直接成本包括参与者的时间和材料。

Direct costs include participants' time and materials.

youdao

这次扫描还说明了，他们成为网瘾者的时间越久，大脑的损害就愈发严重。

The scans showed that the longer their internet addiction continued, the ‘more serious' the damage was.

youdao

As I mentioned before is one example on the risk for breast cancer in women, so you'd randomly assign half to following their usual diet, the other half to an intervention program where people are prescribed a low fact diet, given counseling and interventions from dieticians and things, and then you look to see what happens for risk as people go forward in time.

我之前提过,这例子研究的是,女性的乳腺癌发病率,你将随机选择其中一半人按一般习惯饮食,另一半人则参与一个干预计划,其中每人都要食用,由营养学家设计推荐的低脂肪菜单,然后再看随着时间推移,被试者的发病率是怎样变化的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选