And for people who use their voices a lot, like singers or professional speakers, get voice training and use an amplifier.

VOA: special.2009.09.02

About 25% to 30% of our students are younger students who are just out of college and are looking to immerse themselves in positive psychology before going on into their professional training.

5%到30%的学生是年青人,刚刚大学毕业,希望在进行职业训练之前,先深入学习积极心理学。

哈佛公开课 - 幸福课课程节选

They face heavy demands with limited resources and limited ability to meet training and other professional needs.

VOA: special.2009.10.03

These new professional athletes are training to win basketball games and championships.

VOA: special.2009.07.10