1. But it was still too short a period for men to base a calendar on.
    但时间依然太短，人们无法以此为据制定历法。

2. But with such a large population base, the country must still convert millions more to the idea of birth control if it is to reach its population targets.
    但是因为该国的人口基数十分大，要想达到政府的人口目标，印尼还必须再转变几百万人的思想，让他们接受节制生育的观念。

3. To betray a friend is a base action.
    出卖朋友是最卑鄙的。

4. Two days later a message came in from the North Carolina Marine Corps base informing the Brooklyn Red Cross that the real son was on his way to Brooklyn for his father's funeral.
    两天后，北卡罗来纳海军陆战队基地给布鲁克林红十字会发来一份通知：真正的儿子正在来布鲁克林参加父亲葬礼的路上。

5. At the base of the gold cap, the words ´made in the U. S. A. ´ had been neatly inscribed.
    在金笔套的底部，整齐地刻着“美国造”的字样。

6. At the base of the gold cap, the words ´made in the U.S.A.´ had been neatly inscribed.
    金笔帽下方整齐地刻有"美国制造"字样。

7. Protein is the base of life.
    蛋白质是生命的基础。

8. Comedians base their jokes on tragic situations like violent death or serious accidents.
    喜剧演员根据悲剧情节诸如暴死，重大事故等来编造笑话。

9. Clouds hung over our air base, but I knew that soon I would be above the clouds, where the sun was shining.
    此时云层正笼罩在我们空军基地的上空，但我知道，很快我将升至云端之上，那里阳光灿烂。

10. Observers say the program has succeeded in strengthening the country’s agricultural base and bringing a new source of wealth to villagers.
    观察家们称该计划已成功地巩固了该国的农业基础，而且还给村民们带来了新的财源。