"一直老虎" (yīzhí lǎohǔ) 是指一只动物一直在动，不会停下来休息。这个说法可能来自于老虎作为一种猛兽，通常是活跃的、充满活力的。
在英文中，"一直老虎" 可以用 "a tiger that never stops" 来表示。例句如下：
She's pke a tiger that never stops. She's always on the go, always busy with something. 她就像一只一直在动的老虎，总是忙碌着做点什么。
He's a tiger that never stops. He's always working, always trying to improve himself. 他就像一只一直在动的老虎，总是在工作，总是努力提升自己。
在英文中，"一直老虎" 可以用 "a tiger that never stops" 来表示。例句如下：
She's pke a tiger that never stops. She's always on the go, always busy with something. 她就像一只一直在动的老虎，总是忙碌着做点什么。
He's a tiger that never stops. He's always working, always trying to improve himself. 他就像一只一直在动的老虎，总是在工作，总是努力提升自己。