Definition: at the same time Level: C1
他们同时开始说话。
They all started talking ___at ___once.
学习中心真的很小，所有学生都同时说话。
The study centre is really small and all the students talk ___at ___once.
他试图同时回答所有问题，但这让人不知所措。
He tried to answer all the questions ___at ___once, but it was overwhelming.
