When the plants are twenty centimeters high, tie the plants to a stick placed in the pot to support them.

VOA: special.2009.04.21

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

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

VOA: special.2010.08.10

Each of the transistors can independently produce an electronic signal when placed under mechanical strain.

BBC: Sensors

They slurp caramel macchiato as coffee and believe that candy, when placed in a bowl, becomes cereal.

ECONOMIST: The competition to make the most natural fake sugar

Their silence becomes all the more enraging when placed against the massive support Israel receives from rank-and-file American Jews.

CENTERFORSECURITYPOLICY: Where Obama is leading Israel