We started covering units one and two and hopefully we will cover unit three just right before the mid-term.

我们开始复习第一和第二单元的内容，希望我们在考试前能完成第三单元的复习。

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The nail cover is a cover unit with curved surface alike with the human nail and with side wall which extends from the inner side to the two sides.

指甲套是具有象人的指甲一样自然弯曲的表 面的套本体，并具有从套内侧向两侧延伸的侧壁。

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This is a feasible approach if the unit tests are reasonably small and cover only essential functional requirements.

如果单元测试相当小并且只覆盖必要的功能需求的话，这种方法是可行的。

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By repealing the mandatory good faith bargaining and exclusive representation restrictions, businesses would no longer be required to recognize majority supported unions, bargain on specific topics, and cover a complete bargaining unit with a union contract.

FORBES: Yes, Unions Need Reinventing

Seadrill Partners has granted the underwriters a 30-day over-allotment option to purchase up to 1, 312, 500 additional common units, at the same price per unit, to cover over-allotments, if any.

FORBES: Seadrill Prices IPO

Because the number of potential customers for such experimental sensors is small, the firms manufacturing them have to charge a high price per unit just to cover the fixed costs of designing the product, setting up the factory, and so forth.

FORBES: High Sensor Costs Won't Stand in the Way of the Self-Driving Future