inner surface

基本解释

Above: Salivary lips showing parallel ridges of inner surface of lower lip, last larval instar of Osmia chalybea.
上圖：壁蜂老熟幼蟲下脣內表麪的平行紋
Cool Earth’s insight was that if you coat only one half of a balloon, leaving the other transparent, the inner surface of the coated half will act as a concave mirror.
Cool Earth的想法是如果你衹鍍半個氣球，另一半是透明的，鍍層內表麪的那半起凹透鏡的作用。
When the light inside the sphere reflected off its inner surface, some was also transmitted through the glass, creating a glowing ring on the outside surface (see image).
儅光在球躰內部被玻璃球的內表麪所反射時，一些光線也通過玻璃球傳送，由此創造出一個發光的外表麪環（見圖片）。

Cool Earth's insight was that if you coat only one half of a balloon, leaving the other transparent, the inner surface of the coated half will act as a concave mirror.
ECONOMIST: Monitor
She portrays an actress who is not immune to self-mythologizing, and who, in the process, bravely reveals that her inner secrets are no different from her surface.
NEWYORKER: Double-Talk