cheliceral sheath

例句：

1. 1. The cheliceral sheath is a protective covering for the venomous snake's fangs.
   蝎尾状的鞘是毒蛇尖牙的保护套。
2. 2. The cheliceral sheath is also known as the "snake's armor."
   蝎尾状的鞘也被称为“蛇的装甲”。
3. 3. The cheliceral sheath is a crucial part of the snake's defense mechanism.
   蝎尾状的鞘是蛇防御机制的关键部分。