他穿着白色实验服，显得非常专业。

He is wearing a white ___lab ___coat, looking very professional.

医学院学生在实验室里练习解剖技术。

Medical students practice dissection techniques in the ___lab.

我们公司的研发实验室最近开发了一款新型材料。

Our company's R&D ___lab recently developed a new type of material.

我的拉布拉多犬非常聪明，学会了十几种指令。

My ___lab is very smart and has learned over a dozen commands.