run ahead

先行する、上回る

他より速く進んだり発展したり、予想される限度を超えたりすること。

やさしい英語で： To move or develop further or faster than others, or beyond an expected limit.

• Our costs have run ahead of sales.
• Technology often runs ahead of public understanding.
• The strongest pupils ran ahead of the rest.

使い方： run ahead of someone/something (Costs are running ahead of our budget.)

類義語： outpace, outstrip

反対語： lag behind

よく使う表現： run ahead of someone, run ahead of expectations

別の列車を追い越す

列車が本線の横の別の線路を使って、他の列車を追い越すこと。

やさしい英語で： For a train to pass another train using an extra track beside the main track.

• The express can run ahead here.
• Our train ran ahead of the slower train at a siding.
• The signal allows trains to run ahead using the side track.

使い方： run ahead of another train (The express ran ahead of the goods train at the siding.)

類義語： overtake

よく使う表現： run ahead at sidings, run ahead of trains

先行実行する

結果が近いうちに必要になる可能性があるため、コンピューターの命令を先に実行する。

やさしい英語で： To carry out computer instructions early because their results may be needed soon.

• The processor can run ahead.
• The system ran ahead to prepare the likely results.
• Running ahead helps the processor avoid waiting for data.

類義語： execute speculatively

よく使う表現： run ahead during execution, run ahead speculatively