When using commas to separate items in a list, place a comma before the conjunction that precedes the last separate item in the list, unless that last item is a compound term.
当用逗号来分隔列举的项目时，在名单的最后一个项目之前前的连词前面加逗号。
A novel compound with a much higher anti-virus activity may be got by the conjunction of the two compounds without destroying the active domain.
在不破坏其活性必需集团的前提下，将两种化合物连接起来，很有可能得到抗病毒能力更强的新的化合物。
A composition is disclosed for a mixture to be used in conjunction with water for preparing a slurry that hydrates to form a high strength flooring compound.
本发明揭示一种混合物的组合物，所述混合物拟与水一起用于制备可水合形成高强度地板材料化合物的浆液。
A composition is disclosed for a mixture to be used in conjunction with water for preparing a slurry that hydrates to form a high strength flooring compound.
本发明揭示一种混合物的组合物，所述混合物拟与水一起用于制备可水合形成高强度地板材料化合物的浆液。
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