"It takes nerve to do what she did"
"success usually requires hard work"
"This job asks a lot of patience and skill"
"This position demands a lot of personal sacrifice"
"This dinner calls for a spectacular dessert"
"This intervention does not postulate a patient's consent"
cause to be a concomitant
necessitate的用法和样例：
例句
用作动词 (v.)
It would be best if these disputes could be resolved without recourse to the courts, but the broad reach of electronic networking will probably necessitate changes in common law. 如果诸如此类的争议可以不上法庭就获得解决，是最好不过了，但电子网路的无远弗届或许会迫使普通法改变。
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