• 1. Down-and-In Option: 股价下跌生效的期权 | 股价下跌生效的期权在相关证券价格下跌至一个特定水平时生效的期权
• 2. down-and-in put option: 下降敲入看跌期权
• 3. down-in-and-up-out put option: 下降敲入上升敲出看跌期权

• 1.Tim Love says: "Eating vegetarian may seem like the healthier option (and, probably, often is), but when it comes down to it, meat, in moderation, provides much needed protein, iron and amino acids."
  蒂姆·拉夫说：“吃素食看起来是更健康的选择(而且可能常常是这样)，不过话又说回来，适度的肉可以为我们提供必需的蛋白质、铁和氨基酸。”
  dict.yoduao.com
• 2.And solutions often either can't anticipate the specific repository that will be in play or at least need the option to switch at some point down the road.
  通常，解决方案不能预期只会使用某个特定存储库，至少需要在开发过程中的某个时点上有可以切换的选项。
  dict.yoduao.com
• 3.In milder cases, with older patients or where an operation is risky, doctors are likely to 'watch and wait'. Medicines called bisphosphonates are an option to bring down calcium levels.
  在病情较轻的病例中，如果患者年事已高或手术存在风险，医生可能会“观察一阵”。
  dict.yoduao.com

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