我们上化学课时把化学药品放进试管里。

We put chemicals in test tubes in our chemistry class.

youdao

一上课，我就迫不及待的开始摆弄，然后把试管放进热水中加热，激动人心的时刻就要到来了，可是等了半天不见一点动静。

A class, and I can't wait to start playing with, and then put the tube in the hot water heating, the exciting moment is coming, but for a long time not see a little action.

youdao

将无水硫酸钢(白色粉末)放进装有空压机油的试管中，如硫酸铜由白色变为蓝色，这也能证明油中有水分存在。

Will have no water steel (sulfuric acid) with white powder into the air pressure of the oil tube, such as copper sulphate from white to blue, it can also prove oil there is water there.

youdao

将无水硫酸钢(白色粉末)放进装有空压机油的试管中，如硫酸铜由白色变为蓝色，这也能证明油中有水分存在。

Will have no water steel (sulfuric acid) with white powder into the air pressure of the oil tube, such as copper sulphate from white to blue, it can also prove oil there is water there.

youdao