Due to using the simplified interference model, IEEE 802.11 MAC protocol introduces the hidden and exposed terminal problems which significantly decrease the performance of AD hoc wireless networks.

由于IEEE 802.11 MAC协议采用了简单的干扰模型，因此产生了隐藏终端和暴露终端这两个严重影响无线自组织网络性能的问题。

youdao

In the year to come, security professionals are warning of bank code-stealing exploits that are much slicker and more convincing--hidden in guises as harmless as a banner ad on a reputable Web site or a message from a friend on a social network.

FORBES: Future Phishing

An ad-man's dream, she flicks her wrist to show the pack of Marlboros hidden up the cuff of her denim jacket.

ECONOMIST: After the fast comes the feast