Conventional colonoscopy is performed with a long, flexible tube called a colonoscope that is equipped with a tiny fiber-optic video camera and light at the end.

VOA: standard.2010.04.07

Arguably, Freud fails the test because Freudian theory is often so vague and flexible that it can't really be tested in any reliable way.

可以肯定的是，弗洛伊德的理论无法得到验证,因为精神分析理论的内容,太过模糊又太易变通,你无法通过任何可靠的方式,去验证它的正确性。

耶鲁公开课 - 心理学导论课程节选

and the people that play it are very, very flexible.

而且玩这项运动的人身体要非常非常灵活。

知道马球吗？ - SpeakingMax英语口语达人

The great creator raised his sinuous, powerful, flexible arm, and we know where we stand.

伟大的造物主抬起了他弯曲的，有力的，灵活的手臂，我们知道了我们的立场。

耶鲁公开课 - 文学理论导论课程节选

I think we need a whole electricity distribution system, which is more efficient and bigger, more flexible and more appropriate than we have.

我们需要一个更加有效,更加庞大，更加灵活的配电系统，的配电系统。

斯坦福公开课 - 经济学课程节选