forewarn -------- 预先警告（及物动词）
英文释义
(transitive verb) To alert someone to possible future danger or harm before it occurs, encouraging different choices.
例句
Local residents always forewarn visitors of the dangers of driving in their remote region at night.
当地居民总是预先警告来客，在这一偏远地区开夜车的危险。
