The cave walls were beaded with moisture.是什么意思？

The cave walls were beaded with moisture.

这个洞穴壁上布满了水珠。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

cave

n. 洞穴，〈方〉地窖；vt.& vi. （使）塌陷，倒塌，暗中破坏；vi. 屈服；

例句
The cave walls were beaded with moisture.
这个洞穴壁上布满了水珠。

walls

n. 墙( wall的名词复数 )，屏障，隔阂，壁垒；

例句
The walls were painted in muted tones to show the pictures to good advantage.
墙面被漆成了淡色调，以突出照片。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

beaded

adj. 饰以珠的，珠状的；

例句
The man's bald head was beaded with sweat...
这个男人的光头上满是汗珠。

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。

moisture

n. 水分，湿气，潮湿，降雨量；

例句
Plants absorb carbon dioxide from the air and moisture from the soil...
植物从空气中吸收二氧化碳并从土壤中汲取水分。