These hermit crabs strike fear into the hearts of seated airline passengers whenever they board, because their shells invariably bang into innocent shins all the way to their seat.

• “寄居蟹”一旦坐飞机，总是会让乘客们心惊肉跳，因为他们的“壳”老是会扎到傍边无辜群众的脚面上。