您要查找的是不是：
- This is a long distance call from canada. 这是加拿大打来的一个长途电话。
- This is a long one,and this is a short one. 这是一枝长的，而这是一枝短的。
- This is a long piece,and this is a short piece. 这是一根长的，而这是一根短的。
- This is a long one, and this is a short one. 这是一枝长的，而这是一枝短的。
- This is a long piece, and this is a short piece. 这是一根长的，而这是一根短的。
- This is a penniless lass with a long pedigree. 这是一个虽然一贫如洗，却是出身世家的小姑娘。
- This is a celebration I'll remember for a long time. 这次庆祝，令我难忘。
- This is a long line,but it seems to be moving faster. 这队排得很长，不过好像移动得很快。
- This is a serious crime and carries a long jail sentence. 这罪行很严重,会判很长的徒刑。
- 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 long road, but we have been on the right track. 这是一条漫长的道路，但是我们已经走上了正轨。
- This is increasingly succeeding, but there is a long way to go. 这一点正在逐渐取得成功，但是还有很长的路要走。
- This is a highly efficient new heating system. 这是个高效的新取暖系统。
- This is a tributary of Zhujiang River. 这是珠江的一条支流。
- This is a policy we'll follow for a long time to come. 这是我们将长期实行的一项政策。
- 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 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。
