The snowflakes melt the moment they touch one's hand.是什么意思？

The snowflakes melt the moment they touch one's hand.

雪沾手就化.

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。

snowflakes

n. 雪花，雪片( snowflake的名词复数 )；

例句
His thoughts churned chaotically in his brain like snowflakes whirling about in the north wind.
头脑里,情思弥漫纷乱像个北风飘雪片的天空.

melt

vi. 熔化，溶解，逐渐融合，逐渐消失，感动，软化，感情上变得温

例句
Meanwhile, melt the white chocolate in a bowl suspended over simmering water...
同时，把碗置于微沸的水上，将白巧克力放入碗中使其熔化。

moment

n. 瞬间，片刻，时刻，重要，紧要，[物]力矩；

例句
For a moment a shadow seemed to pass across Roy's face.
一瞬间罗伊脸上似乎闪过一丝忧伤。

they

pron. 他/她/它们，人们，大家，政府，当局，她们；

例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

touch

vt. 触摸，使某物与…轻轻接触，吃或喝，尝，[数]与…相切；n. 触摸，碰，触觉，触感，修饰，润色，痕迹；vi. 接触，联系；

例句
I have a touch of arthritis in the wrist.
我的手腕患有轻微关节炎。

hand

n. 手，协助，帮助，（工具等的）把，柄，掌管；vt. 传递，交给，搀扶，支持；

例句
His hand brushed against hers; it could have been either accidental or deliberate.
就在有意无意间，他的手轻轻拂过她的手。