be down to
US /bi daʊn tu/
UK /bi daʊn tu/

1.
归因于, 是...的结果
to be the result of a particular thing
:
•
The success of the project was down to hard work and dedication.
项目的成功归因于辛勤工作和奉献精神。
•
Her poor performance was down to a lack of preparation.
她表现不佳是由于缺乏准备。
2.
取决于, 是...的责任
to be someone's responsibility
:
•
It's down to you to make sure everyone is informed.
确保每个人都知情是你的责任。
•
The final decision is down to the manager.
最终决定取决于经理。
3.
只剩下, 减少到
to have only a particular amount of something left
:
•
We're down to our last few dollars.
我们只剩下最后几美元了。
•
After all that work, we're down to the final two candidates.
经过所有这些工作,我们只剩下最后两名候选人。