Larry跟李华一起吃中饭，他发现李华心情很糟糕。李华今天要学两个常用语，glum和chum. LL: Hey, Li Hua. You haven't eaten any of your food. Why so glum? LH: 如果你说的glum, 是沮丧的意思，那没错，我这两天心...
