become available....

可用的;可取得的
become aware of...
知道某事
become aware that...
知道某事
become clear...that...
某事对(某人而言)是清楚的
become dependent...
依靠某事物的
become dissatisfied...
对……不满的
become eligible....
对…有资格的
become familiar...
对……熟悉的
become more...
更....
become necessary to...
必需的