One drop of poison infects the whole of wine
One bad element can spoil something otherwise good.
English
One drop of poison infects the whole of wine
Tiếng Việt
Con sâu làm rầu nồi canh.
Một điều tệ đủ làm hỏng cả việc tốt.
Ví dụ
- One unkind line undid the whole letter — one drop of poison infects the whole of wine.
- He removed the paragraph, knowing one drop of poison infects the whole of wine.