Definition
To be proceeding in a way that is likely to be successful or correct.
路線正確，方向正確
The strategy we're considering seems to be on the right lines; it might actually work out in the end.
我們考慮的策略似乎是對的；最終可能會成功。
Despite some initial missteps, the team is now on the right lines with their approach.
儘管一開始有些失誤，但團隊現在的方法已經正確了。
The initial results of the experiment suggest we are on the right lines with our method.
實驗的初步結果表明我們的方法方向是正確的。