speculate

speculate
[ˈspɛkjʊleɪt]
verb
[no obj.]

form a theory or conjecture about a subject without firm evidence
推测
my colleagues speculate about my private life.
我的同事们猜测我的私生活。
[with clause]observers speculated that the authorities wished to improve their image.
观察员们推测当局希望能改善他们的形象。
invest in stocks, property, or other ventures in the hope of gain but with the risk of loss
做投机买卖
he didn't look as though he had the money to speculate in shares.
他看上去不像有钱做股票的。

派生
speculation
noun
speculator
noun
语源

late 16th cent.: from Latin speculat- observed from a vantage point, from the verb speculari, from specula 'watchtower', from specere 'to look'

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