at less than 并不是一个固定搭配,它由介词 at 和固定短语 less than 两部分组成。在通常情况下它们不会用在一起,除非有特定语境的需要。比如:
A discount store is a store which regularly sells goods at less than the usual price. 廉价商店就是其商品售价比通常的价格要低的商店。
Subsonic flying means flying at less than the speed of sound. 亚音速飞行指的是其飞行速度要比音速低。
Nintendo hopes to price the add-on modem at less than $200.任天堂希望将该外挂调制解调器的价格定在200美元以下。
Digital priced the new line at less than half the cost of comparable mainframes. Digital公司新产品的定价比同类主机的一半还要低。