您要查找的是不是：
- To bring about this change, price mechanisms were a key instrument. 要达到这项转变,设立收费基制是重要的一环。
- Acid-leaching reactor is the key instrument for preparing polyaluminium chloride(PAC) from kaoline. 酸浸反应器是高岭土制备聚合氯化铝(PAC)的重要设备。
- TOMS has been the key instrument for monitoring ozone levels throughout the southern hemisphere since the discovery of the ozone hole in 1985. 自1985年发现臭氧空洞以来，TOMS一直都是监视南半球臭氧层的主要仪器。
- Brush, inkstick, instone and paper, called the “Four Treasures of the Study”, are the key instruments for writing Chinese characters. 笔、墨、砚再加上纸，合称“文房四宝”，是汉字的主要书写工具。
- The bridles and the tension control techniques are the key instruments and technoloqies for the modern tandem strip processing line to work efficiently. 张紧装置及张紧力的调整、控制是保证现代带钢连续机组正常运转的关键设备和技术。
- Brush, inkstick, instone and paper, called the “Four Treasures of the Study”, are the key instruments for writing Chinese characters. “Four Treasures of the Study” used by the Chinese emperor. 笔、墨、砚再加上纸，合称“文房四宝”，是汉字的主要书写工具。图为中国皇帝书桌上的文房四宝。
- You may leave your key at the reception desk. 你可以把钥匙留在服务台。
- He put the key in the lock and turned it. 他把钥匙插入锁里转动。
- I have mislaid my key to the door. 我不知道把门钥匙放到哪里了。
- He's locked in and nobody knows where the key is. 他被锁在房间里，没有人知道钥匙在什么地方。
- Reading is the key to the treasure house of ideas. 读书是打开知识宝库的钥匙。
- I looked everywhere for my lost key. 我到处寻找我丢失的钥匙。
- She inserted the key into the lock. 她把钥匙插入锁中。
- The key turned halfway and then jammed. 钥匙转了一半就卡住了。
- The key to the whole affair was his jealousy. 整个事情的症结是因为他忌妒。
- Do you know the key to the problem? 你知道这道题的答案吗？
- a keyed instrument; the locks have not yet been keyed. 有键乐器；锁还没有被锁上。
- Your scatty son has forgotten his key again. 你那儿子丢三落四又把钥匙给忘了。
- I dropped my key somewhere about here. 我把钥匙掉在这附近某个地方了。
- I dropped the key somewhere about here. 我把钥匙掉在这儿附近了。
