1.
principal source of realized income
已实现收益的主要来源
2.
revenue from main sources
由主要来源所得之收入
3.
A geographic region serving as a principal source of grain supply.
谷物的主要产地提供谷物主要来源的地理区域
4.
One or two staple crops are the chief sources of food intake.
一、两种主要农作物是人们食物的主要来源。
5.
a brownish-black mineral; the major source of chromium.
一种褐黑色矿物，是铬的主要来源。
6.
plunder ceased to be the principal source of accumulation;
掠夺不再是积累的主要来源。
7.
Electric utilities and industrial plants are the principal producers.
发电厂和工厂是硫氧化物的主要来源。
8.
Main source: coal-fired power plants and automobile exhaust.
主要来源：汽车尾气和燃煤发电厂。
9.
The major sources of water pollution are industrial, municipal and agricultural.
水污染的主要来源是工业、都市和农业。
10.
The three main sources of power are coal, oil and water power.
动力的三个主要来源是煤，石油和水力。
11.
Automobile exhaust gases are considered the major source.
据认为汽车排出的废气是主要来源。
12.
Incomplete combustion is the principal source of man-made carcinogens.
不完全燃烧是人为致癌物的主要来源。
13.
The transverse sensitivity was due primarily to the end loops in the grid pattern.
横向灵敏度主要来源于栅端部转弯处。
14.
D) Because it was too hot to eat right away.
真题来源 主要内容
15.
primary goals; a primary effect; primary sources; a primary interest.
主要目标；主要影响；第一手来源；主要兴趣。
16.
Newspapers no longer look to their subscribers as the major source of revenue.
报纸不再依靠订户为其主要收入来源。
17.
Magazines no longer look to their subscribers as the major source of revenue.
杂志不再依靠其订户为主要收入来源。
18.
Your other main source of income is sponsorship contracts.
其他收入来源主要是你的赞助合同.