It is more difficult to write simple,directly,and effectively

问题描述:

It is more difficult to write simple,directly,and effectively
than to empoly flowery but vague expreession that only obscure one's meaning.其中only怎么翻译

only的意思有:
①conj.但是,可是,不过
②adv.只,仅仅
③adj.唯一的,仅有的,最合适的
在这里应选②.