snag

n.疑难之处，障碍

smoothie (also smoothy), smoothly, smoothness, smorgasbord, smote, smother, smoulder (US smolder), smudge, smug, smuggle, smuggler, smuggling, smugly, smugness, smut, smuttiness, smutty, snack, snack-bar, snaffle, snail, snake, snake-bite, snake-charmer, snakelike, snakes and ladders, snakeskin, snaky, snap, snap at, snapdragon, snapper, snappish, snappy, snapshot, snare, snarl, snatch, snatch at sth, snatcher,