first available

• 首先获得

first available的用法和样例：

例句

1. When this occurs the Researcher must first obtain the agreement of the Respondent concerned.
   这种情况下，研究人员必须首先获得有关的被访者的同意。
2. Southern farmers accomplished this first by using slave labor, then by creating sharecropping, a form of indentured servitude.
   美国南方农场主通过使用奴隶首先获得了这种劳动力资源，而后创造了收益分成种植体制，即一种契约奴役。