プログレッシブ和英中辞典(第4版)の解説
どうじ【同時】
the same time
同時に at the same time, simultaneously ((with))；〔一時に〕at a time；〔一方では〕while, on the other hand
同時に起こった出来事
simultaneous events
同時に二つのことはできない
No one can do two things 「at a time [at the same time].
車が柱にぶつかると同時に彼は気を失った
He lost consciousness the moment the car ran into the post.
彼の死と同時に山田家の長い家系は絶えた
With his death, the long line of the Yamadas died out.
彼の善意は認めるが，同時に方法がまずかったと言わねばならない
While we admit his good intentions, we must say that his methods were inappropriate.
その遊びは非常に痛快だが同時に危険でもある
That sport is very exciting, but, on the other hand, it is also dangerous.
彼の話は面白いと同時に有益だった
His speech was 「at once [both] interesting and instructive.
同時選挙
a double election; twin elections
同時多発テロ
synchronized terrorist attacks；〔2001年米国の〕9/11(nine-eleven)
同時通訳
((do)) simultaneous interpretation [interpreting]；〔人〕a simultaneous interpreter
同時録音
a simultaneous recording