The researchers described what happened when they placed the coral larvae into the chamber.

VOA: special.2010.08.10

I've got to find them by experimenting, by putting other bodies and seeing how they react and then finding out what's the force that acts on a body when it's placed in this or that situation.

我得通过实验找出这些力,我会增加其它物体,观察其反应,求出当它处在这种或者那种情况下时,作用在物体上的力

耶鲁公开课 - 基础物理课程节选

When the last soldier had been placed on a train, Barton finally left.

VOA: special.2009.07.26