Undeterred means something tried to stop you and did not. It is a small word carrying a whole story: there was an obstacle, a warning, a bad result, a discouraging piece of news — and the person kept going anyway.

Undeterred means Undeterred的意思是 something tried to stop you and did not有東西想阻止你，但沒有成功。It is a small word這是個小小的字 carrying a whole story卻裝著一整個故事： there was an obstacle有個阻礙， a warning一個警告， a bad result一個壞結果， a discouraging piece of news一則令人氣餒的消息 — and the person kept going anyway而這個人還是繼續下去了。

That is why it so often appears with "by": undeterred by the rain, undeterred by the cost, undeterred by two earlier failures. It can also stand alone at the front of a sentence — "Undeterred, she applied again" — which is a favourite of newspaper writers because it packs the setback and the persistence into one word.

That is why it so often appears with這就是為什麼它常常跟...一起出現 "by"『by』： undeterred by the rainundeterred by the rain, undeterred by the costundeterred by the cost, undeterred by two earlier failuresundeterred by two earlier failures。It can also stand alone at the front of a sentence它也可以單獨放在句子開頭 — "Undeterred, she applied again"『Undeterred, she applied again』 — which is a favourite of newspaper writers這是新聞寫作者喜歡用的方式 because it packs the setback and the persistence into one word因為它把挫折和堅持都塞進一個字裡。

The feeling is admiring, usually: brave, stubborn in a good way. But it can be dry or even a little mocking, depending on what the person insists on doing — "undeterred by the smell, he ordered a second one".

The feeling is admiring, usually這種感覺通常是欣賞： brave, stubborn in a good way勇敢、往好的方向說是固執。But it can be dry or even a little mocking但也可能帶點冷調甚至一點調侃， depending on what the person insists on doing要看這個人堅持做的是什麼事 — "undeterred by the smell, he ordered a second one"『undeterred by the smell, he ordered a second one』。

Notice that it needs a discouraging thing nearby to make sense; you cannot be undeterred out of nowhere.

Notice that要注意 it needs a discouraging thing nearby to make sense它需要附近有個令人卻步的事情才說得通； you cannot be undeterred out of nowhere你不能憑空就是undeterred。

It is a written, slightly formal word. In talk people say "he didn't let it stop him" or "she carried on anyway".

It is a written, slightly formal word這是個書面、略正式的字。In talk口語裡 people say人們會說 "he didn't let it stop him"『he didn't let it stop him』 or或 "she carried on anyway"『she carried on anyway』。