by no means

詞意辨析：

by all means, by no means

這兩個詞組都是by...means的形式。
by all means: 意思是“一定”、“無論如何”、“用一切手段”；by all means亦可用於回答，表示有禮貌的同意，作“好的”、“當然可以”解。

• You must bring him here by all means.
  你們一定要設法把他帶到這裡來。
• This project must be realized by all means.
  這個規劃必須要實現。
• You should by all means warn him before he leaves for Singapore.
  你務必在他去新加坡之前提醒他。
• May I have one？—Yes，by all means.
  我可以拿一個嗎？——當然可以。

by no means: 意思是“決不”，相當於not at all.

• She is by no means bright.
  她一點兒也不聰明。
• I will by no means consent.
  我決不同意。
• The first step will take quite a long time and can by no means be accomplished overnight.
  第一步的時間是相當地長，決不是一朝一夕所能完成的。

英文解釋：

副詞 by no means:

1. definitely not
   同義詞：not by a long sight, not by a blame sight

by no means

相關句子：

1. She is by no means poor: in fact, she's quite rich.
   她可不窮，其實她很闊。
2. This is by no means a good way to solve the problem.
   這決非解決問題的好辦法。
3. I'll by no means be a professor.
   我肯定不會成為一名教授的。
4. I'll forgive you this time, but you shall by no means make the mistake again.
   我這次就原諒你，你可不許再犯錯誤。
5. It's by no means certain.
   完全不能肯定。
6. By no means was he able to handle it.
   這件事他絕對沒辦法處理。
7. It is by no means easy to satisfy everyone.
   要滿足每一個人絕非易事。
8. His judgment in this matter was by no means infallible.
   在這件事上他的判斷決不是無可指摘的。