English translation pen is not necessary for most senior high school students, but it can really improve learning efficiency.

Advantages of dictionary pen:

(1) Save time: Even if you are very familiar with it, it takes at least half a minute to look it up in the dictionary, while the translation pen only takes a few seconds, so it is very convenient to recognize it by scanning it.

(2) Small and portable: the translation pen looks like a relatively small pen, which is very convenient to use and carry. You can always take it with you and learn new words when you see them.

(3) Assisted learning: Nowadays, many translation pens have the functions of listening and reading besides translation, which can read words and sentences, which is helpful to train students' listening and speaking ability and facilitate learning.

Disadvantages of dictionary pen:

(1) Simple translation: Limited by the screen size, the words translated by the translation pen are relatively simple definitions, not as detailed as dictionaries, which may cause misunderstanding.

(2) Form dependence: It is too convenient to use the translation pen, which may make students form dependence. When they see words they don't know, they don't guess the meaning in the context, but translate them directly with a translation pen.

(3) It is not conducive to deepening memory: although you spend time looking up words in the dictionary, you also deepen the impression of words in the process of looking them up, and you may forget them soon after reading them with a translation pen.