go to jail: 入狱
I get a ticket or I go to jail.
我得了一张罚单，要不然我要进监狱。
When we land, I go to jail for the rest of my life.
我们着陆后，我就要到监狱过我的下半辈子。

put down: 剥夺权利
Yes, my Caleb killed Melanie, but I couldn't let him go to jail or worse, be put down,
是的，我的Caleb杀了Melanie，但是我不能让他去坐牢，或者更糟的，被处决

be supposed to: 应该、据说
What time will we be supposed to arrive there?
我们应该什么时候到达那里？

protect from: 保护、保卫
It` s there to protect from someonewho might want to steal it.
这是用来防止某些想偷窃古董的人.
It was my responsibility. I was supposed to protect him from himself.
是我的责任，我应该保护他。