upon its ringing everyone would run for their coats and go home,everyone except David.upon表示什么?run表示什么?

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upon its ringing everyone would run for their coats and go home,everyone except David.upon表示什么?run表示什么?
upon its ringing everyone would run for their coats and go home,everyone except David.
upon表示什么?run表示什么?

upon its ringing everyone would run for their coats and go home,everyone except David.upon表示什么?run表示什么?
当铃声响起的时候,除了david 每个人都跑去拿起外套回家了.
upon 是当什么时候的意思
run跑过去的意思

upon在...后立即
run 赶紧