您要查找的是不是：
- The indication is that it is an underworld killing. 迹象表明它是下流社会的谋杀。
- It is an excellent novel in every way. 无论从哪方面来看，这都是一本优秀的小说。
- It is an experience of humiliation. 那是一次不光彩的经历。
- It is an ideal day for a picnic. 这是一个出外野餐的理想日子。
- It is an indisputable fact that man is mortal. 人(早晚)都会死;这是 无可争辩的事实.
- It is an interesting book for children. 那是一本有趣的儿童读物。
- It is an important commercial body. 那是个重要的商业团体。
- I am afraid that it is an unsound investment. 我担心这项投资靠不住。
- It is an ill wind that blows nobody good. 再怎么坏的事，都会对某些人有利。
- It is an impossibility for you to do so. 你那样做是不可能的事。
- It is an astute move to sell just before price goes down. 正好在价格下跌前脱手，真是精明之举。
- It is advisable for a man or woman to acquire an accomplishment. 对男人或女人来说学习一门技艺是明智的。
- It is an invariable fact that spring follows winter. 冬天过后是春天,这是不变的事实。
- It is an equal failing to trust everybody, and to trust nobody. 信任一切与不信任任何人，同样是弱点。
- It is an essential principle that we must combine theory with practice. 我们必须把理论与实践相结合是个重要的原则。
- This is an undisputable fact, it is also an encouraging sign. 这已是一个不争的事实,也是一种可喜的现象。
- It is an authentic work of Qi Baishi. 这是齐白石的真迹。
- It is an article written expressly for the paper. 这是专门为该报而撰写的文章。
- It is an act of kindness/a kind act to help a blind man across the street. 帮助盲人过马路是做好事。
- It is an act of reverence to the seat of life. 这是我们对生命发源地应有的崇敬。
