slap against

The timing chain or belt can slap against the cover , producing a thumping or scraping sound.

正时链条或皮带可能会拍击正时带罩,发出重击声或摩擦声.

His lacerating put-downs were a slap against the culture of self-esteem, the can-do spirit, to quote a favorite of "Idol" singers, of "I Believe I Can Fly."

他伤人的羞辱是对自尊自信精神（用《美国偶像》的歌手们最喜欢的那首歌讲，就是“我觉得我会飞”的精神）的摧残。

the gentle slap of water against the shore

水轻轻的拍岸声

as i felt my balls slap against her ass, i knew that i was in definitely!

既然我的球打到了她的屁股，我知道我肯定（definitely）进球（in）了。

High ten is a double handed high five, usually reserved for especially awesome. The high five is a hand gesture that occurs when two people simultaneously raise one hand each, about head-high, and slap the flat of their palm against each other.

High ten指“双手击掌”，通常在极度令人振奋的情景下使用。High five是一种手势，指两人同时举起一只手到额头以上的高度，然后彼此击掌。