Under the coating of dust and cobwebs, he discovered a fine French Louis XVI clock.

在一层灰尘和蜘蛛网下面，他发现了一个精美的法国路易十六时期的钟。

《柯林斯英汉双解大词典》

After being exposed to air during digging, the coating under the paint began to fall off.

挖掘过程中经暴露在空气中后，油漆下的涂层开始脱落。

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He realized that the singletons were almost always repeated under the latex coating.

他发现这些单次出现的数字几乎总是橡胶涂层下的数字。

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His company's website lists among their achievements not just corded and cordless kettles, but under-floor heating with a cordless connector and a new coating to make kettles boil less noisily.

BBC: Inventing the basics

The Super Multi-Layer Coating reduces flare and ghosting, ensuring sharp, high contrast image quality even under severe conditions such as taking photos against or towards the sun.

ENGADGET: Sigma DP3 Merrill packs a Foveon X3 sensor and a fixed F2.8, 75mm-equivalent lens