"If you ask them whether they will receive a pension and what age, they say "I'm not sure whether I will be in the position of pensioners of today."

VOA: standard.2010.06.16

I'm not sure whether we'll use the Classes server to have you sign up for discussion sections online, or whether we will do it the old-fashioned way and have you sign up on forms that we'll give you here in class.

我还没想要是用校网站,让大家在线讨论，还是用传统的,课堂讨论。

耶鲁公开课 - 新约课程节选

I'm not sure whether this really should be called a coma.

我不确定这是否真的该被称作昏迷。

耶鲁公开课 - 死亡课程节选

Metaphysically,I'm not sure whether that's a possibility or not.

形而上学地，我不确定这是否可能。

耶鲁公开课 - 死亡课程节选

As I say,I'm not sure whether that argument's right.

正如我说，我不确定这个论点是否正确。

耶鲁公开课 - 死亡课程节选