below
below(在…下方,不强调直接接触;低于某数值:below average/zero)
under
under(紧在其下,或低于某数量:under the table = 在桌正下方;under 18 = 未满18岁;under pressure = 在…压力下)
Temperatures in the region dropped below freezing for the first time in over a decade.
该地区气温十多年来首次降至冰点以下。
Children under the age of twelve are admitted free of charge at all national museums.
未满12岁的儿童可在所有国家博物馆免费入场。