家计的英文：
[formal] family livelihood

参考例句：

Household survey
家计调查

The family livelihood is in great distress
家计困苦

The father worked to provide food and shelter for the family.
父亲工作以维持家计。

My father gained a bare livelihood of family by his own hands
父亲靠自己的双手勉强维持家计。

After the eighth grade Cesar had to quit school to support his ailing parents.
八年级后，为帮助体衰的父母分担家计，凯撒必须辍学。

formal是什么意思：
adj. 正式的；礼仪上的；有条理的；正规的；公开的 ；拘谨的

You should recast the report in formal wording as it is a formal occasion.
这是一个很郑重的场合，所以你的报告应改的正式一点。

A formal note is essentially a formal personal letter.
正式照会实质上是正式的个人函件。

They are very formal in their business transactions.
他们的商务议事很有条理。

family是什么意思：
n. 家，家庭；家庭成员；家世；子女

family friction
家庭的不和

There are often many nuclear families in one extended family.
在一个扩大的家庭中往往有多个核心家庭。

Which of you is the baby of the family?
你们当中谁是家中年龄最小的人？

livelihood是什么意思：
n. 生计

Nowadays it is not easy to earn a livelihood.
现今谋生不易。

They depended on animal husbandry for their livelihood.
他们以畜牧业为生。

To be employed as a tailor and do washing—for livelihood
挫针治解