讲解：
a twitch of
闪动；晃动；急拉；(一阵)感觉:
He greeted us with a mere twitch of his head.
他只晃了一下头算是和我们打过招呼。

scared (of sb / sth) | ~ (of doing sth) | ~ (to do sth) | ~ (that...)
害怕；恐惧；畏惧；担心:
People are scared to use the buses late at night.
人们害怕在深夜乘坐公共汽车。

quit (as sth)
离开(工作职位、学校等)；离任；离校:
He has decided to quit as manager of the team.
他已决定辞掉球队经理的职务。

here you go
给你:
Here you go. Four copies, is that right?
拿着。四本,对吗？

listen up
注意听,留心听(让人注意听因有要事要讲)
Listen up!The suspect is in this zone.
听清楚，嫌疑人在此片区域。

master sth
精通；掌握:
French was a language he had never mastered.
法语他一直没有学好。

hit the streets | hit the shops / stores
大量上市:
The new magazine hits the streets tomorrow.
新的杂志明天发行。