Hello, everyone. My name is John. I'm the teaching assistant for this lab session.
大家好 。我叫约翰 。我是这次实验课的助教 。
Let me explain a little about it. As you may know already, it's a required meeting once a week.
让我讲一下这课 。你们可能已经知道，这是每周要上一次的课 。
I expect you to do all the experiments and keep the results in your lab notebook.
I'll collect the notebooks every two weeks.
You'll be graded on lab notebooks and quizzes.
But the most important information I want to give you now is about safety.
First of all, you must wear shoes that cover your feet in the lab. Tennis shoes are OK.
首先，你们在实验室里必须要穿上遮住脚的鞋 。可以穿网球鞋 。
Also, don't wear loose clothes, long scarves, big necklaces, or loose belts — they get caught in something or fall into liquid.
Another thing to do for safety is cleaning up.
Be sure to put the waste in the correct containers.
We can't mix liquid with paper. This is extremely important. I don't want any fires in this room.
我们不能将液体和纸混到一块 。这一点极其重要 。我可不想这间教室着火 。
You are responsible for washing out your own lab equipment and putting it away.
If you don't do this, I will take away points from your grade.
Nobody's going to clean up after you. OK, any questions?