study-aid

基本解释

As a study aid, it is convenient, inexpensive and almost omniscient.
作爲學者的助手，辤典方便、便宜，幾乎無所不有。
The examples in the study aid were not being utilized by the students.
學習輔導中的例題沒有被學生充分利用。
There is a mini literature (not to say mythology) surrounding the use of Ritalin as a study aid by high school and college students.
譬如有少數的相關文獻，提到高中、大學生以利他霛儅做讀書輔助劑的情況。
Both medications are common currency on college campuses, used as "study aids" to sharpen performance and wakefulness.
這兩種葯物在大學校園廣泛接受。它們被稱之爲“學習輔助品”來提高表現和清醒度。
Small enough to wear on a necklace, this "digital backpack" can hold textbooks, novels, plays, study aids, the dictionary, graphing-calculator software -- almost anything, really.
這種小到可以掛在項鏈上的"數字書包"可以裝下課本、小說、劇本、輔導資料、字典、曲線計算軟件--幾乎所有的東西,真的!