firsthand

Adjective

not-comparable

Direct, without intermediate stages. / Not previously owned or used; contrasted with secondhand.

Japanese Meaning

直接の・仲介を経ずに行われた / 新品の・未使用の（中古品に対して）

During the site visit, I gained firsthand insight into the project's logistical problems.

現地訪問の際、プロジェクトの物流上の問題を直接目の当たりにしました。

Sense（1）

Direct, without intermediate stages.

firsthand knowledge

Sense（2）

Not previously owned or used; contrasted with secondhand.

a firsthand copy