“在那个时机”可以翻译为 “at that moment” 或 “at that particular time” 。
“at that moment” 侧重于强调某一个具体的瞬间、时刻 。例如：At that moment, he realized the importance of this opportunity.（在那个时机，他意识到了这个机会的重要性。）
“at that particular time” 更加强调“那个特定的、特定的时间段或时刻点” 。例如：At that particular time, the company was facing severe financial difficulties.（在那个时机，公司正面临着严重的财务困难 。）