The first time you start StarCraft II, you are asked to choose which skill class you fall into, ranging from novice to veteran.

第一次启动《星际争霸2》你需要选择难度，从新手到困难不等。

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Case-teaching is an important teaching method in Food and Beverage skill class. How to choose and classify them are of prime important.

案例教学是高职餐饮服务技能课的一项重要教学方法，案例的选择和分类是搞好案例教学的前提。

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Keyssar also scrutinizes unemployment patterns according to skill level, ethnicity, race, age, class, and gender.

凯萨还根据技能水平、种族、年龄、阶级和性别详细分析了失业模式。

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The game features a number of classes, all of which can be upgraded to advanced classes at level 10, giving you a wide variety of class and skill options that affect movement, attack, and special powers, as well as defense stats.

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For aspects of your business that require specific, high level skills, you may wish to pick up the skill yourself by taking a class or even teaching yourself ( see step 2).

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Upgrade your skill set by taking a class.

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