as a result of a plan; intentionally
有计划地；有意地
I became a presenter by default rather than by design.
我成为主持人是因为当时我未考虑其他选择就接受了，并非我刻意要求得此职。
aim to obtain (something desired), typically in an underhand way
（多指以不正当手段）图谋获得，对…有企图；觊觎
he suspected her of having designs on the family fortune.
他怀疑她在对这笔家产打主意。