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liquidity (esp. financial)
fluidity
mobility (social, job, etc.)
市場の流動性が低い時は売買が難しい。
Trading is difficult when market liquidity is low.
流動性の高い資産を手元に置いておくことが大切だ。
It is important to keep highly liquid assets on hand.
このファンドは流動性リスクが高い。
This fund has a high liquidity risk.