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知るべきだ

should know

→ 知る
phrase Common #3,086
should know Expresses that someone ought to know something or is expected to know it. The examples use different forms of 知る, not the full phrase 知るべきだ.
JA: あなたはその事実を知るべきだ。
EN: You should know that fact.

身の程を知るべきだ

You should know your place.

— 動くな、死ね、甦れ！ (1990)

頭脳、肉体、そして精神のドイツ国民は知るべきだ

The German people must know it with their minds, bodies, and spirits.

— 帰ってきたヒトラー (2015)

あなたはその地方の習慣を良く知るべきだ。

You should know the customs of that region well.

真実を知るべきだ

You should know the truth.

— 灼熱の魂 (2010)

自分自身を知るべきだ。

You should know yourself.

君は恥を知るべきだ。

You should be ashamed of yourself.

トムは真実を知るべきだ。

Tom should know the truth.