|boomtown||新兴都市（名词，非正式用语）||(noun, INFORMAL) A previously quiet town that becomes quite prosperous, often in a short period of time (NOTE: "boom" is the sound of an explosion).||EXAMPLE: Following the discovery of oil in the region, the quiet rural village suddenly became a boomtown with fancy restaurants, hotels, and shopping centers.|
|"Catch you later!"||“回头见！”（非正式表达法）||
(Informal expression) Used to signal an intended departure, and meaning "I will see you and talk with you again soon."
|EXAMPLE: After we talked for a few minutes in my office, my friend suddenly realized she was late for an appointment, and shouted 'Catch you later!' as she hurried out the door.|