【词汇讲解】

1.manual n. 手册，指南，键盘

如：A workshop manual give diagram and instructions for repair your car.
维修手册可向您提供修理汽车所需的图表和说明。

This manual is full of useful tips.
这本小册子里有很多实用的小建议。

2.solution 溶解，溶液

如：Litmus paper can be used as an indicator of the presence of acid in a solution.
石蕊试纸可用以测试溶液是否含酸。

The analysis showed a few grains of arsenic in the solution.
分析显示溶液中有几格令的砷。

3.restriction n. 限制，约束

如:Enforced isolation or restriction of free movement imposed to prevent the spread of contagious disease.
隔离为了防止传染疾病的传播，而强制施行的隔离或对自由活动的限制

The swimming club is open to families in the neighborhood without restriction.
这个游泳俱乐部对邻近地区的家庭开放，不受限制。

4.distilled adj. 蒸馏得来的

如：The battery's quite low, and needs some distilled water.
蓄电池水位相当低了，需要加些蒸馏水。

A brandy distilled from white wine and produced in the vicinity of Cognac.
法国白兰地酒由白葡萄酒蒸馏获得的一种白兰地酒，产于科涅克附近

（可可英语版权所有,未经允许请勿转载)