get behind

US /ɡet bɪˈhaɪnd/
UK /ɡet bɪˈhaɪnd/
"get behind" picture
1.

落后, 拖延

to fail to make enough progress or to be late with something

:
I've got behind with my work.
我的工作落后了
If you miss a few classes, you'll soon get behind.
如果你缺了几节课,你很快就会落后
2.

支持, 拥护

to support someone or something

:
The whole team got behind the new coach.
整个团队都支持新教练。
We need to get behind this initiative to make it a success.
我们需要支持这项倡议,使其取得成功。