1. gradual or incremental progress that occurs at a slower than expected or desired pace
The company's slow advancement in the market was disappointing to investors.
O avanço lento da empresa no mercado foi decepcionante para os investidores.
2. the act of moving forward or progressing at a measured, unhurried speed
His slow advancement through the ranks took patience and perseverance.
Seu avanço lento na hierarquia exigiu paciência e perseverança.