"a crucial moment in his career" "a crucial election" "a crucial issue for women"
"crucial to the case" "relevant testimony"
"the all-important subject of disarmament" "crucial information" "in chess cool nerves are of the essence"
Crucial experiments for the verification..of his theory.
The most crucial and agonising decisions I have been faced with have arisen from personal relationships.
Did it encourage their secretaries and junior executives to feel they belonged to some crucial organization?
牛津高阶第八版
美国韦氏词典
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维基百科 (自由的百科全书)