The researchers have developed rules to predict if a head injury is serious enough for a scan.

VOA: special.2009.10.28

It's much more serious and strange. Okay. So that's enough on Eliot.

那个更严肃更奇怪，好吧，关于艾略特的讨论就到这。

耶鲁公开课 - 1945年后的美国小说课程节选

Getting enough good air to breathe became the most serious problem.

VOA: special.2009.07.22