When you're surrounded by all these people, it can be even lonelier than when you're by yourself. You can be in a huge crowd, but if you don't feel like you can trust anybody or talk to anybody, you feel like you're really alone.
当你被这些人包围的时候,会比你一个人的时候更加孤独。你可以在一大群人当中,但是如果你觉得你不能信任任何人或和任何人交谈,你会觉得你真的很孤单。