Speechless means so struck by a feeling that no words come out. The feeling is usually strong: shock, anger, joy, disgust, or being deeply moved. It is a moment, not a condition — you are speechless for a second or two, then you find your words again.

Speechless means speechless 的意思是 so struck by a feeling被某種感覺震撼到 that no words come out說不出話來。The feeling is usually strong這個感覺通常很強烈: shock, anger, joy, disgust, or being deeply moved震驚、生氣、開心、厭惡，或深受感動都算。It is a moment這是一個瞬間, not a condition不是一種持續的狀態 — you are speechless for a second or two你可能就 speechless 個一兩秒, then you find your words again然後就重新找回話語。

English uses it much more for the emotion than for the silence itself; when someone says 'I was speechless', they are really telling you how strongly they felt, and the silence is the evidence. It works for good and bad feelings both.

English uses it much more for the emotion英文用這個字比較著重在情緒本身 than for the silence itself而不是那個沉默的狀態; when someone says 'I was speechless',當有人說「I was speechless」 they are really telling you他們真正想告訴你的是 how strongly they felt自己的感受有多強烈, and the silence is the evidence而那個沉默只是證據。It works for good and bad feelings both它可以用在好的感覺，也可以用在壞的感覺。

'The view left me speechless' is delight. 'I was speechless when he asked me to pay for his lunch' is outrage. Without any other clue, though, listeners usually lean towards the bad-feeling reading.

'The view left me speechless' 'The view left me speechless'（這景色讓我說不出話） is delight是喜悅。'I was speechless when he asked me to pay for his lunch' 'I was speechless when he asked me to pay for his lunch'（他叫我幫他付午餐錢時我整個傻眼） is outrage是憤怒。Without any other clue不過如果沒有其他線索, though, listeners usually lean towards the bad-feeling reading聽的人通常會偏向往負面的感覺去理解。

There is a second, literal meaning that is rarer and more medical or poetic: unable to speak at all, having no power of speech. The old Old English word covered this sense plainly. Today a doctor would say 'unable to speak' or 'nonverbal', and 'speechless' has drifted almost entirely to the emotional use.

There is a second, literal meaning還有第二個字面上的意思 that is rarer and more medical or poetic比較少見，比較偏醫學或文學: unable to speak at all完全無法說話, having no power of speech沒有說話的能力。The old Old English word古英文的這個字 covered this sense plainly直接就是這個意思。Today a doctor would say今天醫生會說 'unable to speak' or 'nonverbal',「unable to speak」或「nonverbal」 and 'speechless' has drifted almost entirely而 speechless 幾乎已經整個轉移 to the emotional use到情緒上的用法了。

You will meet it in fixed patterns: leave someone speechless, be speechless with rage/anger/shock, be rendered speechless (formal), and simply 'I'm speechless' as a whole reply on its own.

You will meet it in fixed patterns你會在固定搭配裡遇到它: leave someone speechless像 leave someone speechless（讓某人說不出話）, be speechless with rage/anger/shock be speechless with rage/anger/shock（氣到／震驚到說不出話）, be rendered speechless (formal) be rendered speechless（比較正式的說法）, and simply 'I'm speechless'還有單獨一句「I'm speechless」 as a whole reply on its own當作完整的回答。