One ... ...

One enemy is too many, and a hundred friends too few.
(敵人一個嫌多，朋友百個嫌少。)

波羅雞

One eyewitness is better than ten hearsays.
(百聞不如一見。)

One father can support ten children; ten children cannot support one father.

One flower makes no garland.
(一朵花做不成一个花环。)

One foreword is worth two afterword.

One good turn deserves another.
(善有善報。)

One is never too old to learn.
(活到老，學到老。)

One is not smelled where all stink.
(身處臭中不知臭。)

One lie makes many.
(一謊百謊)

彭祖尿壺

One man seeds and the other reeds.
(一人播種，另一人收穫。)

One man meat is the other man poison.

One must draw back in order to leap better.
(退後才能跳得更遠。)

One must draw the line somewhere.
(凡事應有其限度)

鞋底沙

One of these days is none of these days.
(拖延時日,終難實現)

風扇底傾偈

One picture is worth a thousand words.
(千言不如一畫。)