"Scientists supposed that large dinosaurs lived in swamps"
"We were speculating whether the President had to resign after the scandal"
"I mulled over the events of the afternoon"
"philosophers have speculated on the question of God for thousands of years"
"The scientist must stop to observe and start to excogitate"
"I bought this house not because I want to live in it but to sell it later at a good price, so I am speculating"
1.推测;猜测;猜想
If youspeculate about something, you make guesses about its nature or identity, or about what might happen.
e.g. Critics of the projectspeculate about how many hospitals could be built instead...
对该项目持批评态度的人在推测如果改作他用不知可以建多少所医院。
e.g. It would be unfair to Debby's family tospeculate on the reasons for her suicide...
猜测黛比自杀的原因对她的家人来说是不公平的。
2.投机;做投机买卖
If someonespeculates financially, they buy property, stocks, or shares, in the hope of being able to sell them again at a higher price and make a profit.
e.g. Big farmers are moving in, not in order to farm, but in order tospeculate with rising land prices...
大农场主正在不断涌进来，不是为了耕作，而是要利用不断上涨的地价进行投机。
e.g. The banks made too many risky loans which now can't be repaid, and they speculated in property whose value has now dropped.
各银行贷出去太多高风险贷款，目前无法收回，他们还进行地产投机，而地产的价值目前已经下跌了。
1. 推测：他们好像促进了艺术的发展或者从出土的艺术品上可以推测(speculate)他们的情况,这里不太确定. 但关于他们的具体情况并没有文字记载. 2,关于化学元素周期表的发展: 门捷列夫和另一个M打头的人,先是发现相似性,
2. 猜测：批评者猜测(speculate),当地官员可能害怕,对问题的公开(publicity)可能会给奥运会蒙上灰影(tarnish). 所以等到上周,中央政府才对此展开有力的(vigorous)回应. 自此,当局宣布了在全国范围内召回相关产品,逮捕了一些涉案嫌疑人,
