例句：
It can also be used to mean an expression of sympathy.
它也可以用來(lái)表達(dá)同情的感受。
Oxygen could be used to breathe, and hydrogen could be turned into fuel, rocket fuel.
氧氣可以用來(lái)呼吸，氫氣可以變成燃料，火箭燃料。
She was used to her mother's histrionics.
她習(xí)慣了母親裝腔作勢(shì)的樣子。
They're used to stretching their budgets.
他們習(xí)慣于精打細(xì)算。
It's very different to what I'm used to.
這與我所習(xí)慣的大不相同。