摊 means a simple, temporary and informal shop that beside the roads. The seller may put some fruit or vegetables on a sheet, tricycle, or a truck to sell there goods. 上门 means that you don't need to go out, but making a phone call. The worker will come to your home on time. 维修 means mending or fixing, especially for furniture, home appliances, etc. 单车 and 自行车 are the same meaning of bicycle.

1，stall on the roadside 2,someone goes to your home and provides repair service for you 3，it's the same

“摊”指的是路边小贩在直接在地上或者用手推车卖东西，上门维修指师傅来到你家里并帮你维修损坏的物品，单车和自行车是同一种东西的不同叫法。

1_ What does mean摊in this sentence? ——摊_360百科： https://baike.so.com/doc/4709008-4923417.html 你在路边把桌子摊开来，卖水果，那你摆水果的地方就会被别人称呼为水果摊 2_What does mean 上门 and 维修 in this phrase? ——上门，就像送外卖要到你的家门口一样，这就叫上门。 ——维修，你家的水管破裂了，需要工人来维修/修理。 3_what Is different between 单车and 自行车 —— 链接： https://wenda.so.com/q/1372905876064218?src=150 单车和自行车都是一样的，只不过叫法不一样，不过自行车包括的种类更多，例如双人自行车（这个不能用单车来代替）