1. If you slack off now, you won't finish the project on time.
如果你现在偷懒，就无法按时完成项目了。
2. He has been slacking off lately and his grades are dropping.
他最近一直很懈怠，成绩正在下降。
3. Don't slack off just because the exam is over.
别因为考试结束了就开始偷懒。

A: Why haven't you finished your report yet?
A：为什么你还没写完报告？

B: Sorry, I've been slacking off a little this morning.
B：抱歉，我今天早上有点偷懒。

1) 偷懒，懈怠

2) 玩忽职守

3) 敷衍了事

1. 偷懒，懈怠

e.g.If you slack off, you'll fail the exam.
如果你偷懒，考试就会不及格。

verb

1. to work with less effort than is expected or necessary.

Synonym: loaf around, laze around