vt.【不可分性動(dòng)詞短語】 1. affect; havean effect on (something)對……起作用,對……有影響:Does the drug take long to act on the nervecenter?這藥要很長時(shí)間才對神經(jīng)中樞起作用嗎?A body at rest remains at rest unless acted upon byan external force.如果不受外力作......（本文共 485 字）     [閱讀本文] >>