亲爱的燕子夫妇,你们好:我是你们的房东。从现在开始,你们住在我家,必须交纳一定的费用。你们应该交纳的费用,一共有以下几项:一、空间使用费,每年若干元。收取理由:这一点不用多说,你们在我家屋檐下筑巢,自然要使用我家的空间,既然使用了我家的空间,就应该交纳空间使用费。二、环境污染费,每年若干元。收取理由:你们住在这里,肯定要拉屎,而你们又不会打扫,只能靠我来打扫,所以这笔费用,也叫燕子屎清运费。三、垃圾堆放费,每年若干元。收取理由:你们的屎虽然能做肥料,但是我不会用它来做肥料,那就必须找地 Dear swallow couple, how are you: I am your landlord. From now on, you live in my home and must pay a fee. You should pay the fees, a total of the following: First, the cost of space, several yuan per year. Reasons to collect: Needless to say, you nest under the eaves of my house, and I naturally need to use the space in my house. Since I use my home space, I should pay for the use of space. Second, environmental pollution costs, each year a few yuan. Reasons to collect: You live here, certainly want to shit, and you will not clean, can only rely on me to clean, so the cost, also called swallow feces clear shipping. Third, the garbage dump fee, a few yuan per year. Reasons to collect: Although your shit can make fertilizer, but I will not use it to make fertilizer, it must find