Unbounded describes something that has no edge, no ceiling, no point where it stops. In real use it is almost always about feelings and qualities rather than physical space: unbounded joy, unbounded enthusiasm, unbounded ambition, unbounded generosity. The picture behind it is a field with no fence — a bound is a border, and this thing has none.

Unbounded這個字 describes形容 something某樣東西 that has no edge沒有邊界, no ceiling沒有上限, no point where it stops也沒有停止的地方. In real use實際使用時 it它 is is almost always幾乎都是 about feelings and qualities而不是物理空間地在講感受和特質 rather than physical space, like像: unbounded joy無限的喜悅, unbounded enthusiasm無限的熱情, unbounded ambition無限的野心, unbounded generosity無限的慷慨. The picture behind it背後的畫面 is is a field with no fence一片沒有圍籬的田野 — a bound邊界這個詞 is is a border指的是界線, and而 this這樣東西 has none沒有邊界.

It is a formal, written word. You will find it in books, speeches and serious articles; you will not hear it from a friend telling you about their weekend, who would say 'so happy' or 'crazy about it'. It is a warm word more often than not: unbounded usually praises.

It它 is is a formal, written word一個正式的書面用字. You你 will find it會在 in books書裡, speeches演講裡 and和 serious articles正經文章裡 找到它; you你 will not hear it不會聽到 from a friend telling you about their weekend朋友跟你聊週末時這樣講, who他們 would say會說 'so happy'「好開心」 or或 'crazy about it'「超愛的」. It它 is is a warm word more often than not多半是個正面的詞: unbounded這個字 usually通常 praises帶有讚美的意思.

Compare boundless, which means almost the same thing and is a little more common; and note that when the same idea turns critical, English tends to switch to unbridled or unchecked instead. In mathematics unbounded has a strict technical sense — a set or function with no finite limit — but your students will meet the everyday version first.

Compare可以比較一下 boundless這個字, which它 means意思幾乎一樣 almost the same thing and而 is is a little more common稍微更常見一點; and而且 note要注意 that when當 the same idea turns critical同樣的意思要轉為負面時, English英文 tends to switch to往往會改用 unbridled或unchecked instead不受控制、失控 這兩個字. In mathematics在數學裡 unbounded這個字 has有 a strict technical sense一個嚴格的專業意義 — a set or function with no finite limit指沒有有限界限的集合或函數 — but但 your students你的學生 will meet the everyday version first會先接觸到日常用法.