1)useful,有用的2)serviceable,有用的3)useful mathematics,有用的数学4)helpful hint,有用的提示5)helpful tool,有用的工具6)useful tool,有用的工具7)Useful Biomass,有用的生物量8)To study useful geography,学习有用的地理9)serviceable,有用的耐用的10)profitable,有利的;有用的
用法例句
This text comes down to examine "useful mathematics" closely from the visual angle of mathematics culture.
本文从数学文化的视角下来审视“有用的数学”。
“To study useful geography”is the new turn of geography curriculum reforms and places it in the first place,which is an idea that this geography cirriculum reforms most emphasized.
