A modern hotel uses a great deal of complicated equipment, involving its heating and airconditioning systems, elevators, escalators, electricity, and plumbing, to name only the most important.是什么意思_A modern hotel uses a great deal of complicated equipment, involving its heating and airconditioning systems, elevators, escalators, electricity, and plumbing, to name only the most important.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句