TASK DEFINITION: In this task, you are given a sentence in the Japanese language and your task is to convert it into the English language. In translation, keep numbers as it is and make it sentence case (capitalize only the first word of each sentence and noun).
PROBLEM: 「ボランティア（アシスタント）に、企業の主要な業務を行っていた労働時間に対して賃金が支払われていない。」

SOLUTION: "Volunteers (Assistants) are not paid any wages for hours worked while performing the major duties of the firm."

PROBLEM: 「彼の真の目的を特定するのは難しいが、独裁的指導者という彼のイメージを和らげたいという自分の意思で動きがあったと我々は考えている」とラヂオプレス編集長であるカトウシンヤは述べました。

SOLUTION: "We believe the change was made at his will to soften his image as a leader of a personality cult, although it is hard to determine what his real intentions are," said Shinya Kato, the editor of Radiopress.

PROBLEM: どちらの場合も、氷（どのジェット燃料の中にも通常は存在する水からできたもの）の蓄積が燃料／オイル熱交換器と呼ばれる構成部分で進んでいた。

SOLUTION:
In both cases a build-up of ice (from water normally present in all jet fuel) developed on a component called the fuel/oil heat exchanger.