Remember those little Petri dishes from your lab experiments in high school?
记不记得高中实验课上的培养皿？
They did their experiments carefully in the lab yesterday.
昨天他们在实验室认真地做实验。
Each lab group completes three out of six possible experiments in a semester.
每一组都要从六个实验中挑选三个，在本学期完成。
Each lab group does three out of six possible experiments in a semester.
每一组须从六个实验中挑选三个，在本学期完成。
They did their experiments carefully in the lab yesterday.
方式 地点时间昨天他们在实验室认真地做实验。
This is one of the experiments being carried on in our lab.
这是我们实验室正在进行的试验之一。
The students are doing the experiments carefully in the lab now.
同学们现在正在实验室里认真地做实验。
The students are doing the experiments carefully in the lab now.
同学们现在正在实验室里认真地做实验。
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