您要查找的是不是：
- It is a non contact optical scanner which using raster theory. 它是非接触式的利用光栅原理的光学扫描设备。
- It is a fact of life and you must face it. 这是严酷的现实，你必须面对它。
- It is a long flight from Sydney to Beijing. 从悉尼到北京飞行时间很长。
- It is a nice song and I think it will catch on quickly. 这首歌很好，我想它会很快流行起来。
- It is a systematic attempt to strengthen our competitive ability. 那是为增强我们的竞争能力而作的有计划的努力。
- It is a barbarous way to extend territory by arms. 以武力扩张领土是一种野蛮的方式。
- It is a fact that I have written this sentence. 我写了这个句子是事实。
- It is a fact that must be faced up to. 这是必须正视的事实。
- It is a pity that you missed the party. 你未能参加聚会，真是遗憾。
- It is a leap in the process of cognition. 这是认识过程的一次飞跃。
- It is a matter of life and death for them. 这事对他们来说是生死攸关。
- I do not realize it is a double feature. 我原先不知道这是双片连映。
- It is a crime to stuff the ballot box. 为候选人投伪造票是犯罪行为。
- It is a telex rather than a letter. 与其说它是一封信，不如说它是一封电传。
- Stop swearing;it is a bad habit. 别骂人了;那不是好习惯。
- It is a great folly to try to persuade him. 试图说服他未免太愚蠢了。
- It is a house embosomed in trees. 这是一幢被树木环抱着的房子。
- It is a pleasure to converse with her. 和她谈话是一种乐趣。
- It is a case of the student outstripping the teacher. 这是一个学生超过老师的例子。
- It is a complexity of higher mathematics. 这是一道高等数学的难题。
