| 1. |  Each component is carefully checked before assembly. | 
 | 每个零件在装配前都经过仔细检查。
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| 2. |  Surprise is an essential component of my plan. | 
 | 我这项计划主要就是想使人惊喜一下。
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| 3. |  Because alcohol is a solvent, it is a component of many liquid medicines. | 
 | 由于酒精是溶剂,所以它是许多药水的一种成分。
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| 4. |  Every component of an aircraft has a specifiable function to perform. | 
 | 飞机上的任何一个部件都有具体明确的功能。
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| 5. |  The apparatus thus described, however, records only the horizontal component of the wave movement, which is, in fact, much more complicated. | 
 | 然而,这里所说的仪器记录下来的只是地震波运动中的水平部份,地震波的运动实际比这要复杂得多。
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