1. Barrels of meat supplied to the army were stamped "EA-US", identifying the company (EA) and country of origin (US).
    送到军队的肉桶上面都印有EA-US的标志，EA代表公司名，US代表原产国。

2. We must conclude from the work of those who have studied the origin of life, that
    根据那些研究生命起源的人们所作的工作，我们必然得出这样的结论：

3. We must conclude from the work of those who have studied the origin of life, that
    根据那些研究生命起源的人们所作的工作，我们必然得出这样的结论：

4. We must conclude from the work of those who have studied the origin of life,
    根据研究生命起源的人们所作的工作，我们必然会得出这样的结论：

5. The African had a passion to keep his African origin alive.
    “老非洲”有一股强烈的感情，要让他的子孙后代记住他们的祖先是非洲人。

6. Their language is of unknown origin and cannot be placed within any standard classification.
    他们的语言起源不明，也无法根据任何通常分类来归类。

7. Many scientists consider the Khoisan a distinct race of very ancient origin.
    很多科学家认为科伊桑人是一个独立的非常古老的人种。

8. Its title was the Origin of Species, written by Charles Darwin.
    书的名字叫"物种起源". 作者是查理士.达尔文.