1. While the terror group established a large, secretive external operations wing bent on attacking the West, it has also cultivated a backup strategy of enabling and inspiring attacks by individuals. 虽然这个恐怖组织建立了一个庞大的、秘密的外部行动部门，致力于攻击西方，但它也形成了一种支持和鼓励个人发动袭击的后备战略。
2. He's very secretive about his work. 他对自己的工作讳莫如深。
3. Everyone is being very secretive—there's something cooking. 人人都讳莫如深—准是在搞什么鬼把戏。
4. Billionaires are usually fairly secretive about the exact amount that they're worth. 亿万富翁们通常对有关他们身价的确切数字讳莫如深。
5. Having spent a lifetime avidly courting publicity, Paul has suddenly become secretive. 花了一生的时间狂热地追求出名之后，保罗突然变得遮遮掩掩起来了。
