1. Even on Valentine's Day, when the price of a dozen roses and delivery can soar as high as $150, 12 of Roses Only's most expensive flowers sell for just $35.
    即使是在情人节，当一打玫瑰价格外加送花费可上涨至150美元的时候，"惟一玫瑰"花店里最贵的玫瑰也只卖35美元一打。

2. But optimists see the current problems of expanding cities as merely part of an evolutionary process.
    但是乐观主义者认为，现在城市膨胀造成的问题只不过是发展过程中的自然现象。

3. But what is wrong is that these things often come in at a high price to their health and the welfare of their families.
    错的是这些东西是以牺牲他们的健康和他们家庭幸福的高昂代价才得以实现的。

4. By measuring how closely current populations are related, the authors trace the routes by which early humans migrated around the earth.
    通过测定当前人类种群间的亲缘关系，作者们弄清了地球上早期人类迁移的路线。

5. We were rowing against the current.
    我们逆水划船.

6. What is the price of this table?
    这张桌子多少钱?

7. Where is the price tag?
    价格标签在哪儿?

8. Wires transmit an electric current.
    电线传导电流.

9. When anyone opens a current account at a bank, he is lending the bank money, repayment of which he may demand at any time, either in cash or by drawing a cheque in favour of another person.
    任何人在银行开一个活期账户，就等于把钱借给了银行。这笔钱他可以随时提取，提取的方式可以是取现金，也可以是开一张以他人为收款人的支票。

10. Within seconds, a small display unit on the checker´s right shows the name and price of the item; at the same time this information is printed on a strip of paper.
    瞬间功夫，在收款员右手的一个小型显示器上就显示出商品名称、价格，同时这些信息就印在了一张长纸条上。