忽而

hū'ér

suddenly; now..., now…, often usesd simultaneously before verbs or adjectives of opposite or similar meanings

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忽而

hū ér

now ..., now...:

忽而哭,忽而笑 cry and laugh by turns;

天气忽而冷忽而热。 The weather is now hot， now cold.

雨忽而下,忽而停。 It rains off and on.

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忽而|忽而 [hū ér] ► suddenly ► now (..., now...)