Only time will tell if the treatment has been successful.

只有时间才能证明这种疗法是否成功。

Only time will tell whether Broughton's optimism is justified.

只有时间能证明布劳顿的乐观有没有道理。

Only time will tell if you are right.

只有时间才能证明你是否正确。

Only time will tell, but we have high hopes.

也许存在另一种可能，时间将告知结果，我们拭目以待。

Only time will tell.

只有时间会告诉。