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- This is a useful speech making sentence pattern. 这是个很有用的演讲句型。
- I am well aware that this is a tough job. 我深知这是一件棘手的工作。
- This is a useful base class for code generators to derive from. 此基类对派生代码生成器非常有用。
- This is a book useful for beginners in French. 这是一本对初学法语的人有帮助的书。
- This is a highly efficient new heating system. 这是个高效的新取暖系统。
- This is a sort of indeterminate color. 这是一种说不清的颜色。
- This is a coat of her own making. 这是她亲手做的外衣。
- This is a useful variable to employ when you have directional information to convey (up or down, backward or forward). 当我们有和方向有关的信息需要传达时（上或下，前进或后退），方位是个很有用的变量。
- This is a good place for a picnic. 这是一个野餐的好地方。
- This is a question that they have often debated. 这是个他们常讨论的问题。
- This is a task well within your ability. 这完全是你力所能及的工作。
- This is a very popular name for a girl. 这是一个非常普通的女孩名字。
- I certify that this is a true copy. 我证明这是真副本。
- This is a book for young and old (alike). 这本书老少咸宜。
- This is a book useful for beginners in English. 这是一本对初学英语者有帮助的书。
- This is a kind of lavender-water. 这是一种熏衣草香水。
- This is a kind of metallic paint. 这是一种有金属光泽的涂料。
- This is a large passenger airliner. 这是一架大型客机。
- This is a plan for the fortification of the city. 这是一个加强城市防御的计划。
