跟...几十年

但我 跟 水泥 打了 几十年 的交道 那特殊水泥

(搅拌的过程我不在) ── Previous context

“but after decades working with cement, I can tell whether the cement”

也 跟 了我 几十年 了

(之前是你外祖父 上门来提亲时的见面礼) ── Previous context

“It's been with me for decades.”

跟 她 几十年 没见了

(肯定是) ── Previous context

“Even though we hadn't seen each other in decades,”