李华和Larry正在商量去野营的事。今天李华会学到两个常用语:cold feet和do a number。LL: Hey Li Hua, are you ready for that camping trip this weekend?LH: 这个周末去野营的事呀? 嗯… 我还没一定是不是能跟你们一起去…LL: What? Don't tell me you're getting cold feet! You told me last week you wanted to come along!