be upon 是什么意思谢谢

be upon 是什么意思谢谢 请问be available upon request 是什么意思? upon是什么意思? upon是什么意思 The form will be sent upon request是什么意思 be frowned upon peace be upon him 请问这里的upon doing是什么意思?I was already running, and upon reaching the car across the street...upon doing 是一个句型么?谢谢 payment upon shipment是什么意思? available upon request是什么意思? “upon saturation”是什么意思啊? A wish upon a star that fairytales be oveA wish upon a star that fairytales be over but written on the book forever是什么意思? be impressed upon one's 用be based upon造句 be upon sb意思RT. be based on 和.be based upon Once upon the time 是什么意思 of wave upon wave是什么意思