抓紧学习

to concentrate on studying hard

to grab / to catch / to arrest / to snatch / to scratch

to grasp firmly / to pay special attention to / to rush in / to make the most of

tight / strict / close at hand / near / urgent / tense / hard up / short of money / to tighten

to learn / to study / to imitate / science / -ology

to learn / to study

surname Xi

(bound form) to practice / to study / habit / custom