Correct
可一而不可再
/ kě yī ér bùkě zài /
Strokes
Definition
may be done once and once only/just this once
Example
Definition
can do only once, not twice; once is forgivable, not twice; once is enough
1
Zhè
这
děng
等
shì
事
kě
可
yī
一
ér
而
bùkě
不可
zài
再
。
You can only do it once, not twice.