In Baltimore, everything gets compromised over time. You can be the perfect cop or the perfect dealer, but you'll eventually get taken down. So to survive you have to watch your back. There are people who'll tell you that it's a hard world and you have to put friends and family above that, but the reality is that when the heat comes down, sometimes the only way to survive is making sure you're not the fall guy.In this Chinese lesson for Elementary students, we dole out some practical vocabulary you'll use regardless of how you feel about the law. You'll hear this when you call customer service. You'll hear it when you do your banking over the phone. You may even hear it from your closest friends and family.