Instructional
a. 教学的, 教育的
✅ 同义词
📖 牛津释义
instructional
adj
giving instruction; educational 教学的; 有教育内容的
instructional films 教学影片.
🗣️ 情景例句
When are they coming?
他们什么时候来？
He reads a book every day.
他每天都读一本书。
a trough (the lowest point), a height (the vertical distance from the trough to the crest),
波谷（最低点）、浪高（从波谷到浪峰的垂直距离）