in one breath或in the same breath

At or almost at the same time.同时，立刻：在或几乎在同时

out of breath

Breathing with difficulty, as from exertion; gasping.呼吸急促，气喘吁吁：呼吸困难，如在用尽全力时；气喘吁吁

under (one's) breath

In a muted voice or whisper.压着嗓音，低声说：以微弱的嗓音或声音说