1·How to set primary key with duplicate values based on main primary key?
如何基于主密钥重复值，主键设置？
2·The respiratory diseases were the main primary disease, accounting for 37.1%.
患儿原发病类型以呼吸系统疾病为主，占37.1%。
3·The urediospores developed by the hyphae next year are the main primary inocula of the disease.
次年产生的夏孢子堆为主要初次侵染来源。
4·My main primary opponent was Lonnie Turner, the Ozark lawyer I'd worked with on black-lung cases back in 1975, after his partner, Jack Yates, died.
我主要的初选对手是罗尼·特纳，来自欧扎克的律师，在1975年在黑肺案审理过程中，他的合伙人杰克·叶芝去世之后，我曾和他合作过。
5·The primary goal of a university is to train talents, and teaching is the main way to cultivate talents.
高等学校的首要目标是培养人才，教学是培养人才的主要途径。
6·At the primary level, the main aim is to cultivate good habits, like learning to plan and exercising self-discipline.
在小学阶段，主要目的是培养良好的习惯，如学会做计划和锻炼自律的能力。
7·The main tasks of the reform are to unify title systems of primary and secondary school teachers and set up senior titles.
改革的主要任务是统一中小学教师职称制度，建立高级职称。
8·The main characteristics of the primary key are that it is unique and stable -- it is unchanging over time.
主键的主要特征是，它是惟一的、稳定的 —— 它不会随着时间而改变。
9·The primary persona represents the main targeted users; it is therefore the main driver for designing the application's user interface.
主要角色代表主要的目标用户，因此是设计应用程序用户界面的主要推动力。
10·It is usually best to choose the main tool by considering the primary role of the database user and by taking advantage of its XML capabilities as far as possible.
最好是通过考虑数据库用户的主要角色，并通过考虑尽量长远地发挥其XML功能的优势，来选择主要工具。