"About half of my soaps have no added essential oils, it's for people with very sensitive skin who want to avoid essential oils for any reason.

VOA: special.2011.03.09

What happens is you become sensitive to a cue that an event is about to happen and that allows you to prepare for the event.

经典条件作用使得你对预示着,即将发生之事的提示线索变得敏感,这使得你能够为即将发生的事件作好准备。

耶鲁公开课 - 心理学导论课程节选

Burns also indicated movement on reaching an agreement with India required by U.S.law for all foreign military purchases of sensitive American technology.

VOA: standard.2009.06.11