1. The secret agent was able to infiltrate the enemy's headquarters without being detected.
那名特工成功潜入敌方总部而不被察觉。

2. The secret agent received a mission to gather intelligence on the terrorist organization.
特工接到一项任务，要搜集有关恐怖组织的情报。

3. The identity of the secret agent was never revealed to the public.
特工的身份从未被公开。

4. The secret agent used a variety of disguises to blend in with the crowd.
特工使用各种伪装融入人群中。

5. The secret agent's code name was "Shadow" to protect his true identity.
特工的代号是“影子”，以保护他的真实身份。

6. The secret agent's training prepared him for any dangerous situation he might encounter.
特工的训练使他能够应对可能遇到的任何危险情况。