1. We all speculated about the reasons for her resignation. 我们大家都推测过她辞职的原因。
2. 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。
3. The study speculated, having a white roommate helps academically prepared black students adjust to a predominantly white university. 研究推测，对于在学业方面有所准备的黑人学生来说，或许拥有一位白人室友可以帮助他们进行调节，以适应一所白人占主导地位的大学。
4. Huxley speculated that a coat of hair would insulate against loss of body heat and might streamline the body to reduce drag in flight. 赫胥黎推测，一层毛发可以隔离身体热量的流失，并可能使身体呈现流线型，以减少飞行中的阻力。
5. Time spent using the Internet cannot be spent in face-to-face social contact, so psychologists have speculated that sharply increasing Internet use can cause depression. 使用互联网的时间不能用于面对面的社会接触，因此心理学家推测，大量使用互联网会导致抑郁。
