1. 墨守成规 to move in a groove
To move in a groove 是一句成语，意思恰好是墨守成规。groove是事先刻好的槽。
2. 毫无建树 to do nothing, to contribute nothing, to achieve nothing.
毫无建树在不同的语境需要用不同的翻译。比如：
Amy does next-to-nothing for her job, but still earns a lot of money. 艾米在工作中毫无建树，却仍拿着不少工资。
He did nothing noteworthy during his tenure. 他在任职期间毫无建树。
Tourism contributes nothing to increasing understanding between nations. 旅游对增进民族了解毫无建树。