theory的意思是“学说”。例句：1、Da Vinci was methodical in his research, carefully recording his observations and theories.达·芬奇搞研究井井有条，会详细记录观察资料和理论学说。2、This ridiculous theory is based on a series of wrong assumptions. 这一荒诞的学说是以一系列错误的设想为依据的。3、His theory has proved durable. 他的学说已经证明是经得起时间考验的。4、I do not attach much weight to the theory. 我不十分重视这学说。5、He has established his theory. 他确立了他的学说。
