Vacillation is the noun for what a person does when they vacillate — the state of changing your mind again and again and not settling on anything. You can use it uncountably, for the general behaviour (his vacillation cost us the deal), or countably in the plural, for the separate wobbles (after several vacillations, she signed). The uncountable use is far more common.

Vacillation is the noun for what a person does when they vacillatevacillation是vacillate這個動詞的名詞形式 the state of changing your mind again and again指的是一再改變主意 and not settling on anything卻始終無法定下來的狀態 You can use it uncountably, for the general behaviour你可以不可數地用它，來指整體的這種行為 his vacillation cost us the deal他的猶豫不決害我們丟了這筆生意 or countably in the plural, for the separate wobbles也可以複數可數地用，指一次次個別的動搖 after several vacillations, she signed經過幾次搖擺之後，她簽了字 The uncountable use is far more common不可數的用法遠遠更常見

Like the verb, it is formal and it is usually a criticism. Newspapers love it for politicians and leaders: "weeks of vacillation", "the government's vacillation over the border rules". The message underneath is almost always "they should have decided by now, and their not deciding is causing harm".

Like the verb, it is formal跟動詞一樣，這是個正式詞 and it is usually a criticism而且通常帶批評意味 Newspapers love it for politicians and leaders報紙很愛用它來說政治人物和領導者 weeks of vacillation, the government's vacillation over the border rules像「數週的猶豫不決」、「政府在邊界規定上的搖擺」 The message underneath is almost always底層傳達的訊息幾乎都是 they should have decided by now, and their not deciding is causing harm「他們早該做出決定了，不決定正在造成傷害」

In ordinary speech, people would say "he kept changing his mind", "all this back and forth", or "dithering". Save vacillation for writing, and for when you want a serious tone.

In ordinary speech在日常口語裡 people would say he kept changing his mind人們會說「他一直改變主意」 all this back and forth「這樣反反覆覆」 or dithering或「猶豫不決地拖著」 Save vacillation for writing把vacillation留給書面文字用 and for when you want a serious tone以及想要嚴肅語氣的時候

It often appears with words that measure it — endless vacillation, constant vacillation, months of vacillation — and with "over", "about", or "between": vacillation over the budget, vacillation between the two plans.

It often appears with words that measure it它常常和表示程度的詞一起出現 endless vacillation, constant vacillation, months of vacillation像「無止盡的猶豫」、「不斷的搖擺」、「數月的猶豫不決」 and with over, about, or between也常搭配over、about或between vacillation over the budget, vacillation between the two plans像「在預算上的猶豫」、「在兩個方案之間的搖擺」