coating

1. N-COUNT A coating of a substance is a thin layer of it spread over a surface. 涂層

Under the coating of dust and cobwebs, he discovered a fine French Louis XVI clock. 在一層灰塵和蜘蛛網(wǎng)下面，他發(fā)現(xiàn)了一個精美的法國路易十六時期的鐘。