2. Her real-life sister Lexie often accompanies her dressed as Elsa's sister Princess Anna from the movie, and her best friend steps in when Lexie isn't available.
4. n. 权力，权威，职权，官方，当局
5. Columbus Day became a U.S. holiday in 1971. It is generally observed by banks, state government offices, the Postal Service and federal agencies. The bond markets are closed for the holiday, but many businesses and stock exchanges remain open.