During the class discussion, the teacher seized a teachable moment to explain the importance of critical thinking.
在课堂讨论中，老师抓住了一个好学阶段来解释批判性思维的重要性。
The parent recognized a teachable moment when her child asked about the stars, guiding him through a basic astronomy lesson.
当孩子问起星星时，家长认识到了一个好学阶段，引导他进行了一个基础的的天文学课程。