腿酸脚软

One’s legs were tired from walking (for a long time).

tuǐ suān jiǎo ruǎn

One's legs were tired from walking (for a long time).

tuǐsuānjiǎoruǎn

One's legs are tired from walking (for a long time).

пословный:

腿酸	脚软
tuǐsuānболи в ногах	jiǎo ruǎnслабость в ногах