sleeping policeman

(infml 口) bump built across a road to make drivers slow down 路埂（横设於道路上的隆起物, 可使司机减速）.

slay, SLD, sleaze, sleazily, sleaziness, sleazy, sled, sledge, sledge (also esp US sled), sleek, sleekly, sleekness, sleep, sleep-walker, sleep-walking, sleeper, sleepily, sleepiness, sleeping bag, sleeping partner (US `silent partner), sleeping sickness, sleeping-bag, sleeping-car, sleeping-pill, sleepless, sleeplessly, sleeplessness, sleepwalk, sleepwalker, sleepy, sleet, sleeve, sleeveless, sleigh, sleight, slender, slenderly, slenderness, slept, sleuth,