1. Social scientists and economists, farming experts and environmentalists pose this question and examine data, information from surveys.
    社会科学家和经济学家、农业专家和环境保护主义者提出了这个问题，并对调查所得的数据和信息进行了研究。

2. Sam is now a year and a half old, big enough to cross the playground's bouncy bridge himself.
    山姆现在一岁半了，有能力自己穿过操场上的蹦蹦桥。

3. Sometimes trucks try to cross the border with hidden drugs.
    有时，有货车藏着毒品企图过境，

4. Medical supplies are being flown in under the aegis of the Red Cross.
    在红十字会的保护下, 正在空运进医药用品.

5. Many thousands of prisoners remember with gratitude the Red Cross food parcels, the warm clothing, the books and the medical supplies that were sent to them.
    成千上万的战俘现在仍感激红十字会曾为他们送去食品、御寒衣、书籍及药品。

6. Many mothers and fathers were thankful for news of their missing sons first brought to them by the Red Cross.
    许多父母非常感激红十字会最先给他们带来了下落不明的儿子的消息。

7. How patiently I taught my daughter how to cross a street safely.
    之后在教她如何安全穿过马路时，又是多么耐心啊！

8. It is rash to cross the street without looking both ways.
    不朝两边看看就穿马路是莽撞的。

9. Which I found most helpful on the cross-country journey, but which I did not think I should need on the last stage.
    在乡间行车途中，我觉得它非常有用，但快到家了，我倒觉得它没什么用了。

10. In 1864 a treaty — The Convention of Geneva — was signed and the Red Cross came into being.
    1864年，一项协议——日内瓦公约得以签署，红十字会诞生了。