to be weak on sth

to be weak on sth
13. (poor) 不精通的；不擅长的；弱的；差的
- Geography was my weak subject. 地理是我的弱项。
- the relatively weak performance of girls in maths and science 女孩在数学和理科课程方面相对较弱的表现
14. (unconvincing) [+ argument] 缺乏说服力的；不能令人信服的
- The evidence against him was weak. 指控他的证据不足。
15. to be weak on sth
(lack strength in certain area) 在某方面较差
- His short stories tend to be weak on plot. 他的短篇小说往往情节牵强。
16. 【语法】 [+ verb] 弱变化的(即动词变位靠词尾变化, 而非内部元音改变, 如：look, looks, looking, looked)
17. 【语法】 (regular) (任何词类)规则变化的
See: weak

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