once or twice

• adj. 一两次

once or twice的用法和样例：

例句

用作形容词 (adj.)

1. She referred to it once or twice.
   这一点她提到了一两次。
2. One or two appeals for funds were slipped into his opening address.
   在开幕词中，他不动声色地对资金问题提出了一两次呼吁。