simultaneous
/ˌsɪmlˈteɪnɪəs; ?@ ˌsaɪm-; ˌsaɪml`tenɪəs/adj ~ (with sth) happening or done at the same time (as sth) 同时的; 同时发生的; 同时做出的
simultaneous demonstrations in London and New York 在伦敦与纽约同时举行的示威游行
The explosion was timed to be simultaneous with the plane's take-off. 把爆炸的时间定在正是飞机起飞的时刻.