We all speculated about the reasons for her resignation.

我们大家都推测过她辞职的原因。

Many speculated that the U.S. would put the peace process on the back burner.

许多人认为美国会把和平进程放在次要地位上。

The tabloids speculated as to whether she was having an affair, and with whom.

那些通俗小报猜测她是否正有风流韵事，以及跟谁有。

The banks made too many risky loans which now can't be repaid, and they speculated in property whose value has now dropped.

银行贷出了太多现在无法偿还的风险贷款，而且他们在房地产业做了投机买卖，其价值目前也已经下跌。

She speculated that professors might try even harder to make classes interesting if they were to compete with the devices.

她推测，如果教授们要与这些设备竞争，他们可能会在让课堂变得有趣方面下更多功夫。