28211.on the fly(即興で〜する）while dealing with a situation, rather than before dealing with it
We switched plans on the fly and it worked out.
28212.hang on（ちょっと待って） used to ask or tell someone to wait 類義語 hold on
Can you tell him to hang on a moment?
28213.killer（素晴らしい） informal something that is very exciting or impressive
We switched plans on the fly and it worked out.
28212.hang on（ちょっと待って） used to ask or tell someone to wait 類義語 hold on
Can you tell him to hang on a moment?
28213.killer（素晴らしい） informal something that is very exciting or impressive
That’s a killer watch. Where did you get it?
28214.test the waters （試してみる） to check people’s reaction to a plan before you decide to use it
Before signing up, do the 30-day trial and test the waters.
28215.for ages（長いこと）
I haven’t spoken to Jack for ages. I wonder how he’s doing.
28215.for ages（長いこと）
I haven’t spoken to Jack for ages. I wonder how he’s doing.