1. The philosopher speculated about time and space.
   这位哲学家在思索时间和空间问题。
2. We should speculate about the purpose of life.
   我们应该想想人生的目的。
3. Scientists speculate on the origin of the universe.
   科学家们猜测宇宙的起源。
4. He speculated that he would succeed.
   他推测他将成功。
5. We don't know all the circumstances, so it would be pointless to speculate.
   我们不了解所有的情况, 妄加推测是没有意义的。
6. It's dangerous to speculate.
   做投机买卖是很危险的。
7. The new insurance rules speculate that the disabled for the public benefit are to receive more money.
   新的保险条例规定因公伤残者将得到更多的抚恤金。
8. The investigators and editorialist speculate that the same is true for evening primrose oil, another source of gamma linolenic acid (GLA).
   调查人员和社论作者推测迦玛亚麻油酸（GLA）的另一种来源-月见草油也有相同的情况。
9. It is speculated that meiosis occurs during the time period from these formation of the conchospore to the first cell division of it.
   并对减数分裂这一遗传现象进行了重新认识，提出紫菜减数分裂可能发生在壳孢子形成至壳孢子萌发的第一次细胞分裂时期。
10. Would he be what he is if he hadn't speculated on the stock of exchange?
    如果不搞证券投机买卖, 他会成为今天这个样子吗?
11. His burial place has not been found but it has been speculated that it may indeed be at Saqqara, possibly in an unattested mastaba 3518.
    他埋葬的地点至今仍未发现，但推测可能位于萨卡拉，未经证实的古埃及墓室3518。

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