bi-directional dynamic strategy 双向动态策略
directional strategy
定向策略
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The great takeaway, and one of the best things about this type of strategy, is that you do not necessarily need a directional opinion.
FORBES: Don't Choke On This Options Strategy: The Strangle
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