Jul 08

korien_july8“Are you sure Jenkins can make the sale?”
“Sure, he’s a rock solid salesman.”

Something that’s solid is reliable. And there’s not much more solid than a rock. So someone or something that is rock solid is very reliable.


丈夫な物、硬いものは信頼できます。岩より硬い物ってあまりないですね。なので、岩みたいに硬い(rock solid)人または物はとても頼もしい、信頼できるというという意味です。

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