gain entry into a flat
アパートに押し入る
gain [get] face
面目を施す,株を上げる
gain from the investment
投資で利益を得る
gain high rewards
高い報酬を得る
gain [lose] impetus
勢いを得る[失う]
gain in confidence [popularity]
信頼[人気]を増す
gain independence from ...
…から独立する
gain market share
市場シェアを高める
gain [gather, build (up)] momentum
勢いがつく,勢いを増す
gain [loss] of prestige
威信の獲得[失墜]