Family is very important because they are there for you in your darkest times. They are your very first and your very last friends, they will be there for you. At your death bed they will be holding your hands wishing you won't past. During your life they are the ones who truly love you for the person you are and they are the one with whom you share laughs, cries, and gets angry at.
I'd say, "Over and over again, the liquid had to be strained and purified."
This supports the claim that sugar processing is long and difficult because it refers to having to do the action over and over again.
The Three Sisters, like Chekhov's plays of his later period, intertwines the mundane and the tragic. Chekhov focuses on the women's inability to be happy and their brother's staunch rejection of any promise in his life. But Chekhov is not above the use of humor to poke fun at the stubborn backwardness of his characters. The Three Sisters uses a subtle form of indirect action that, for Chekhov, mirrored real life. If reality is paced in a certain fashion, Chekhov reasoned, his plays should reflect that reality.