先制的英文：
initiative
n. 主动的行动，首创精神，主动权
adj. 开始的，初步的
marginal initial
边缘原始细胞[见于植物]
The body is initially at rest, and the spring is initially unstretched.
起初物体是静止的，弹簧也未拉长。
embryo initial cell
胚原始细胞
Initially, all went well.
最初，一切顺利。
It is very familiar to the initiate.
这对新加入者是很熟悉的。