Her idea is: live a life and try not to create any rubbish; use different kinds of ways to save the environment, such as stopping the use of one-off objects; giving unwanted things to others or donating these things to organizations like the Red Cross.
她的想法是：好好生活，不制造一点垃圾；采取不同的方式拯救环境，比如停止使用一次性物品；把不想要的东西给别人，或者捐给像红十字会这样的组织机构。
You can change objects and save them back to the database, but only if you are connected to a context object.
但只有在你连接到上下文对象的时候，你才可以修改对象并把它们保存回数据库。
When you build this habit, it can save you - and people maintaining your code or using your objects - a lot of time.
在您养成这个习惯时，它可以帮您—和维护代码或使用对象的人员—节省很多时间。
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