• common强调"常见的"、" 不足为奇的"如：

• Colds are common in winter.

• 感冒在冬天很常见。

• ordinary强调"平常的"、"平淡无奇的"如：

• His ordinary supper consists of only bread and milk.

• 他通常的晚餐不过是面包和牛奶。

• general意为"普遍的"、"一般的"， 如：

• This book is intended for the general reader, not for the specialist.

• 这本书是为一般读者写的， 不是为专家写的

• B). account v. 解释; 报帐;把...视为

• I have an account with Midland Bank.

• 我在米德兰银行开有户头。

• Too much rain accounted for the poor crop.

• 太多的雨水导致庄稼歉收。

• He could not account for his absence from school.

• 他无法说清楚为什么旷课。

• He was accounted a first-rate actor.

• 他被认为是一流演员。

• Although many people are familiar with Aids and how it is transmitted, more than a few people subscribe to the view that HIV and Aids are an African problems...

• A). familiar. 熟悉的

• She wrote in a familiar style.

• 她用亲切的笔调写作。

• I am of course familiar with your work.

• 我当然熟悉你的工作。

• This nursery rhyme is very familiar to me.

• 我对这首摇篮曲很熟悉。

• B). transmit v. 传输,传播;转送,;发报

They are trying to find a better way of transmitting energy.