Crickets hold their elytra up which creates a small air pocket that acts as a sounding box.

蟋蟀把鞘翅翘起形成一个小气囊，起到小共鸣用。

For the candidates, these two components are mounted on the elytra — the two most rigid wings on the insect.

对于演奏者这都在它们鞘翅上面——鞘翅是昆虫个硬质翅膀。

How differently constructed is the feathered wing of a bird and the membrane-covered wing of a bat; and still more so the four wings of a butterfly, the two wings of a fly, and the two wings with the elytra of a beetle.

鸟羽毛翅膀和蝙蝠膜覆盖翅膀构造有多么不同；更何况还有蝴蝶四个翅膀、苍蝇个翅膀和甲虫个带有鞘翅翅膀。