account for是对?负有责任，说明（原因、理由等），导致，引起，在数量、比例上占的意思。
拓展资料
1、PHRASAL VERB （数量或比例上）占
If a particular thing accounts for a part or proportion of something, that part or proportion consists of that thing, or is used or produced by it.
Computers account for 5% of the country's commercial electricity consumption.
计算机占去该国商业用电的5%。
2、PHRASAL VERB 导致；解释
If something accounts for a particular fact or situation, it causes or explains it.
Now, the gene they discovered today doesn't account for all those cases.
不过，他们现在发现的基因无法解释所有的病例。
3、PHRASAL VERB 为?提出理由;对?作出说明
If you can account for something, you can explain it or give the necessary information about it.
How do you account for the company's alarmingly high staff turnover?...
你怎么解释这家公司高得令人忧虑的人员流动率？
4、PHRASAL VERB 对（行动、政策等）负有责任
If someone has to account for an action or policy, they are responsible for it, and may be required to explain it to other people or be punished if it fails.
The President and the President alone must account for his government's reforms.
总统必须为他的政府改革负责，而且是负全责。
5、PHRASAL VERB 将（钱款）列入预算
If a sum of money is accounted for in a budget, it has been included in that budget for a particular purpose.
The really heavy redundancy costs have been accounted for.
非常庞大的裁员开支已被列入预算。
6、PHRASAL VERB 杀死；消灭；打败
If you account for an enemy or opponent, you kill, destroy, or beat them.
In the first ten days of May our squadron accounted for at least seven enemy aircraft...
5月的头10天里我们中队至少报销了7架敌机。