Shack 美 /ʃæk/ a small building, usually made of wood or metal, that has not been built welln. 简陋的小屋，棚屋
Shack up 连起来是什么意思呢？让我们一起看一个句子来学习下：
She is shacking up with her boyfriend.
她正在跟她的男朋友同居。
shack up：同居
Young people are afraid to get married, so they shack up.
年轻人害怕结婚，所以他们同居。是这样么？
Will you allow your daughter to shack up with her boyfriend?
你同意你的女儿与她男友同居吗？
So, if you are a parent and have lost a spouse to divorce or death, don’t shack up.
所以，如果你是一位离异或者配偶去世的父母，不要选择同居。要保护好自己的孩子！
Couples who shack up before tying the knot are more likely to get divorced than their counterparts who don't move in together until marriage, a new study suggests.
一项研究显示，与结婚之后才搬到一起居住的夫妇相比，步入婚姻殿堂之前就同居的夫妇更有可能离婚。要重视哦！
《老友记》影视原声：
Chandler and I are moving in together.
Chandler 和我要住在一起。
Oh, my little sister and my best friend shack up.
哦，我妹妹和我最好的朋友同居。