英语翻译：
【计】 less-than
例句：
- 一年级新生小于十八岁或大于十九岁是相当特殊的。
It is quite unusual for a freshman to be younger than eighteen or older than nineteen.
- 负数的有关或表示一个小于零的数的
Relating to or designating a quantity less than zero.
- 2号铁头球棒铁制高尔夫球棒，其高击斜面大于发球球棒小于3号铁头球棒，用于击中远球和长距离球；2号铁头球棒
An iron golf club that has more loft than a driver and less than a three iron, used for medium fairway shots and long approach shots; a two iron.
分词翻译：
小的英语翻译：
for a while; little; minor; petty; small; young
【计】 mic-
【医】 micr-; micro-; mikro-; nano-
于的英语翻译：
for; of; to; when