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時として, ときとして
1. in some cases, sometimes, on occasions
tbd
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ことがある, 事がある
1. (for something) to have occurred, to have done (something)
2. (for something) to happen on occasion
(某事)发生,已完成(某事);(某事)偶尔发生
する, 為る
1. to do, to carry out, to perform
2. to cause to become, to make (into), to turn (into)
3. to serve as, to act as, to work as
4. to wear (clothes, a facial expression, etc.)
5. to judge as being, to view as being, to think of as, to treat as, to use...
做,作,干,执行