您要查找的是不是：
- 这是喷气式飞机吗? Is this a jet?
- "可是对你来说这是一桩大事啊。" "什么大事不大事的！我担心什么？" "But it's a serious matter for you." "Serious my foot, why should I worry?"
- 老师讲解什么是喷气式引擎，直到学生们理解为止。 The teacher explained the idea of jet engines until the students latched onto it.
- 啊！天气真好！这是拜访客户的好日子。 Oh, what a nice day! It's a good day to make call on some customer.
- 据这篇报导说，“机鸟相撞”是全世界喷气式飞机飞行中一个有待解决的难题。 According to this report, "bird strikes" are a problem to jets all over the world.
- 啊，这是可以想象的。 Oh, that can be imagined.
- 这是实心橡胶轮胎。 This is a solid rubber tyre.
- 这是狼吗? Is it a wolf?
- 这是他最成熟的一部剧作。 This is the most mature of his plays.
- 这是给他设置的圈套。 It is a snare for him.
- 这是个商业银行。 This is a merchant bank.
- 这是她的巨大损失。 It is a great loss to her.
- 这是新布料的样品。 This is a specimen of the new fabric.
- 这是一个不可能实现的方案。 This is a device for squaring the circle.
- 这是对进化论的清晰的阐述。 This is a clear exposition of the theory of evolution.
- 这是一项基于谬误推理之声明。 This is a statement based on fallacy.
- 这是一本关于人的繁育的书。 This is a book about human reproduction.
- 这是唯一能想出的解决办法。 This is the only solution imaginable.
- 这是一张桌子吗? Is this a desk?
- 这是一位不知名的年轻诗人写的。 It is written by an obscure young poet.
