adj.初步的；预备的；开始的
n.初步行动；准备；初步措施
They have made a preliminary investigation. 他们已经做了初步的调查。
Our team got beaten in the preliminary rounds of the competition. 我们队在这次比赛的预赛中遭淘汰。
Movies at the preliminary stage were silent. 电影在初期是无声的。
