speculate
英 ['spekjʊleɪt]
美['spɛkjə'let]
	    - vi. 推测;投机;思索
 - vt. 推断
 
英英释意
- 1. to believe especially on uncertain or tentative grounds;
 - "Scientists supposed that large dinosaurs lived in swamps"
 
- 2. talk over conjecturally, or review in an idle or casual way and with an element of doubt or without sufficient reason to reach a conclusion;
 - "We were speculating whether the President had to resign after the scandal"
 
- 3. reflect deeply on a subject;
 - "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"
 
- 4. invest at a risk;
 - "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"