"But this has raised concern that O.E.C.D countries were mainly exporting their shortage problem to countries that may have an even greater need for these nurses."

VOA: special.2010.06.07

In Scratch, the block you may have used for this idea literally says "or" for or; in C, two vertical bars.

在Scratch中，这个你用的程序块,照字面地想法来说“or“表示或者;,在C语言中，是两个竖线。

哈佛公开课 - 计算机科学课程节选

The fall of Pylos is generally thought to be around 1200 B.C.; Mycenae itself may be fifty years later, and other places later than that.

人们普遍认为皮洛斯的陨落,大约在公元前一千二百年,迈锡尼城本身也许在五十年以后,其他的地方更晚些

耶鲁公开课 - 古希腊历史简介课程节选

For example, there may be a correlation between maternal mortality and Caesarean births, or so-called "C-Sections."

VOA: standard.2010.06.23

"Now,that may be because they are sicker and they needed it, and C-Sections certainly save lives."

VOA: standard.2010.06.23