1. Two factors weigh heavily against the effectiveness of scientific research in industry.
    有两个因素严重地不利于工业中的科研效果.

2. Two factors weigh heavily against the effectiveness of scientific research in industry.
    有两个因素严重地妨碍工业中科学研究的效率：

3. These huge stone blocks weigh an average of two and a half tons each, as much as a small car.
    这些巨大的石块平均每块重２吨半，像一辆小型轿车那样重，

4. How many pounds do you weigh?
    你体重多少磅？

5. ´Jumbo must weigh a few tons,´ said a policeman afterwards,
    "江伯一定有好几吨重，"一个警察事后这样说，

6. Some even weigh fifteen tons.
    有些石块甚至重达15吨。

7. “Fine,” I tell her. “How much does he weigh?”
    "挺好，"我告诉她。"他体重多少？"

8. In tight turns and recovering from dives, it can pull nine G's, or nine times the force of gravity, causing a 200-pound man to weigh nearly a ton.
    在急转弯和俯冲后拉升时，它能达到超重9倍，也就是重力的9倍，让一个体重200磅的男子重达近1吨。