您要查找的是不是：
- This is a right angle; that is a sharp angle. 这是一个直角，那是一个锐角。
- This is not a right angle, but an acute one. 这不是直角,而是锐角。
- This is not a right angle, butan acute one. 这不是直角，而是锐角。
- This is a power and not a right. 这是一种权力而不是权利。
- I hold that this is a right decision. 我相信这是个正确的决定。
- 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 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 most valuable - a most sacred right - a right, which we hope and believe, is to liberate the world. 这是一个最有价值的最神圣的权利，这个我们向往和信仰的权利可以解放全世界。
- 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 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。
