大家都知道冰是易碎的，如果你拿锤子敲击它，它会如玻璃一样碎裂。
You've already known that ice is brittle, and if you hit it with a hammer, it will shatter like glass.
他给艾伯特一只小鼠，每当小艾试图触摸它时，沃森都会用锤子敲击一根铁棒以发出一种可怕的声响。
He presented Albert with a rat, and every time the baby reached out to touch it, Watson hit a steel bar with a hammer to produce a horrendous clang.
它拿出他的手机，笨拙地在屏幕上轻轻敲击。
It took out his cell phone and tapped awkwardly on the screen.
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