您要查找的是不是：
- This is standard XP practice, but it is always tempting to ignore it. 这是标准的XP方法,但却总有一种忽视它的诱惑。
- All this is standard stuff: antivirus systems that do this have been around for years. 所有这些都是些标准化的素材：反病毒的系统已经工作了许多年。
- This is one of the standard books on the subject. 这是有关这个问题的权威著作之一。
- A can like this is considered below standard. 这样的罐头认为是不合格的。
- This is the standard textbook on the subject. 这是这一科的权威性课本。
- A simple test will show if this is real gold. 简单的试验就能证明这是否是真金。
- I am well aware that this is a tough job. 我深知这是一件棘手的工作。
- This is only one instance out of many. 这不过是许多例子中的一个。
- This is not a treatise on statistical theory. 这不是一篇有关统计理论的论文。
- This is an amicable mood conversation. 这是一次亲切友好的交谈。
- This is a highly efficient new heating system. 这是个高效的新取暖系统。
- This is the area that attracts the most attention. 这是最受关注的地区。
- This is the man who wanted to see you. 这就是要见你的那个人。
- This is where we change from car to bus. 这就是我们从小汽车换乘公共汽车的地方。
- Don't complain of anybody. This is an act of God. 不要抱怨任何人，这是天意。
- Ah! This is where I put away this shirt. 啊，原来这衬衫是收在这地方。
- This is the first main crux of dynamic theory. 这是动态学说第一个主要的难题。
- This is a sort of indeterminate color. 这是一种说不清的颜色。
- This is an issue of the utmost importance. 这是一个极为重要的问题。
- This is by all odds the easier way. 这肯定是较为简单的方法。
