A medicine cabinet, "medicine," cabinet, "cabinet," is something that you use to put your things - your bottles, your medicine, your toothpaste - things you use in your bathroom, you put
Usually medicine cabinets have a mirror on the front, which is also the door, and you can open up the medicine cabinet and get things out of it. 通常药柜正面有一面镜子，也是柜子门，你可以打开药柜，从里边拿东西。
Lucy and her roommate "have separate medicine cabinets." Lucy says that "There’s also room under the sink for our hairdryers and tampons." 露西和她的室友“药柜是分开的。”露西说“洗手盆下方也有地方可以放电吹风和卫生棉条。”
When we say there is room, we mean there is space - there is a place for you to put things. 我们说有地方，是指有空间，你可以放东西的空间。
The word room also refers to a part of your house or a part of a building - the bedroom, the dining room, and so forth. room这个词也指房子或者建筑的一部分，比如卧室，餐厅等等。
But here, it's used to mean space, so there is "room under the sink for" their "hairdryers and tampons." 但是在这里，这个词指空间，“洗手盆下方也有地方”放“电吹风和卫生棉条。”
