What is their main source of income?
他们的主要收入来源是什么？
I had several children and books were our main source of entertainment.
我有几个孩子，书是我们的主要娱乐来源。
The main source of income, tourism, is expected to dry up completely this summer.
作为主要收入来源的旅游业预计将在今年夏天彻底枯竭。
This is my main source of income.
我的大部分收入来源于此。
At the moment, they are her main source of income.
现在，这是她的主要收入来源。
The main source of revenue is tax.
财政收入的主要来源是税收。
Land is the main source of wealth.
土地是主要的财富渊源。
The main source of infection is pig.
传染源和宿主动物主要是猪。
The main source of pyrogens is endotoxin.
较主要的热原是内毒素。
Gratitude is the main source of happiness.
感恩是快乐的主要源泉。
Tax is a main source of a country's revenue.
税收是国家财政收入的重要来源。
Indiana's main source of power production is coal.
印第安纳州的主要能源来自于煤炭。
Milk is the main source of calcium and protein.
牛奶是钙和蛋白质的主要来源。
CRM: Acted as the main source of customer information.
CRM：作为客户信息的主要来源。
Plants are the main source of atmospheric oxygen.
大气中的氧主要是由植物产生的。
The sun provides the main source of light and heat.
太阳是提供光和热的主要来源。
Carbohydrates are your body's main source of energy.
碳水化合物是身体能量的主要来源。
Exposure to sunlight is the main source of vitamin D.
日晒是维生素d的主要来源。
Money from ads is the main source of revenue for the company.
通过广告赚的钱是该公司的主要收入来源。
Ocean shipping is one of main source of Marine pollution.
海运业是海洋环境污染的重要来源之一。
Royal Jelly is the main source of food for the queen bee.
蜂王浆是蜂王的主要食物来源。
Your other main source of income is sponsorship contracts.
其他收入来源主要是你的赞助合同。
Energy consumption is the main source of carbon emissions.
能源消费是碳排放的主要来源。
Banks are turning to central Banks as their main source of cash.
银行纷纷将央行作为主要的资金来源。
Historical essays are the main source of the Chinese novel.
历史散文是中国小说的主要源头之一。
The main source of dietary fat was from meat and vegetables.
膳食脂肪的主要来源是肉类和蔬菜类食物。
Technology innovation is a main source of economic development.
技术创新是经济持续增长的主要源泉。
Soybean is the main source of plant protein and lipid for mankind.
大豆是人类主要的植物性蛋白质、油脂的重要来源。
They own the cattle, which are the main source of both food and income.
他们拥有牛，这是食物和收入的主要来源。
They own the cattle, which are the main source of both food and income.
他们拥有牛，这是食物和收入的主要来源。
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