渐渐

gradually; slowly; increasingly; by little and little; little by little; by degrees; step by step; gradual; progressive

后退

retreat; fall back; recede; back up; withdraw; regress; retrogress; back down; give ground; move back; step back; back off; draw back; back out; pull back; shrink back; cede ground; regression; fallback; backtracking; retrogressive; backward; backwards

发际

hairline; hair roots; hair boundary