Difficult. Mainly need to master a lot of professional vocabulary and expressions. In addition, writing ability is also very important when completing related papers. Freshman, I was very interested in learning English at first, and then I took audio-visual and oral classes, which made it difficult to fully understand, especially for foreigners to interview. Many new words, such as continuous reading, have stopped and can't keep up with me. Articles are difficult to contact and understand, and sometimes a sentence needs to be played back repeatedly to spell it completely, especially if you don't listen to the original text, which is very difficult to understand. In addition, my spoken English is poor and my pronunciation is strange.