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You’ll need a heavy dose to tranquilize yourself enough to be a leader. It can pretty stressful to be a leader so most of them are sedated. Tranquilize yourself too and you'll be just like them!
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
彼の会社は、業界の重鎮達を次々と役員に迎え入れた。
That company ushered in leaders of industry one after another to their staff.
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