In cities with inelastic supply, where speculation is possible, there was heavy use of IOs, but only in cities that had boom-bust cycles.

在那些无弹性房屋供应、允许投机的城市，IOS被大量应用，但仅限于存在繁荣-萧条周期的城市。

youdao

Option volume on the CBOE Volatility Index (VIX) grew increasingly call heavy on Monday, as speculation for continued market weakness grew.

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Share prices in the telecom sector have recovered slightly from heavy losses in 2012, as speculation over takeovers in the industry mounts.

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Darling's book is a bit heavy on this sort of enthusiastic speculation.

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