预备

prepare; be ready; get ready; stand by; preparation; provision; preparatory; preliminary; spare; prep; on your get go

开始

begin; start; commence; initiate; embark on; set out; launch; kick off; get going; get underway; open; lead off; strike up; get off the ground; get the ball rolling; enter upon; set in motion; beginning; commencement; onset; initiation; initial; opening; starting; first; initially; at first; in the beginning