为了保持专业,她总是与同事保持距离。
She always ___keeps her colleagues ___at ___arm's ___length to maintain professionalism.
起初,他与新邻居保持距离,但很快他就对他们热情起来了。
Initially, he ___kept his new neighbors ___at ___arm's ___length, but soon he warmed up to them.
在商业中,与潜在竞争对手保持距离是明智的。
It's wise to ___keep potential rivals ___at ___arm's ___length in business.