1. Despite the chaos around him, he remained imperturbable and focused on his task.
尽管周围很混乱，他依然保持着沉着冷静，专注于自己的任务。
2. She faced the criticism with an imperturbable smile, showing that she was unfazed by the negative comments.
她面对批评时面带沉稳的微笑，表明她对负面评论毫不在意。