彼女はパーティーのために入念な準備をした。

tbd

She made elaborate preparations for the party.

彼は入念に書類を見た。

tbd

He had a good look at the papers.

彼の理論は入念な調査に基づいている。

tbd

His theory is based on careful research.

His theory is based on elaborate investigation.

警察は事故原因を入念に調査した。

tbd

The police carefully investigated the cause of the accident.

その警察官は証拠を探すためにその部屋を入念に調べた。

tbd

The policeman went over the room in search for evidence.

この上なく入念に準備した計画でもしばしば失敗する。

tbd

Even the most carefully made plans frequently result in failure.

The best laid plans of mice and men often go awry.

アメリカには憲法上の抑制と均衡という入念な制度がある。

tbd

America has an elaborate system of constitutional checks and balances.

入念な計画と努力の賜物です。

tbd

It is the fruit of hard work and a well-prepared plan.