sweetly

1. ADV If an engine or machine is running sweetly, it is working smoothly and efficiently. (引擎或機(jī)器運(yùn)轉(zhuǎn))正常地; 良好地[ADV with v]

He heard the car engine running sweetly beyond the open door. 他聽到敞開的門口外的汽車引擎運(yùn)轉(zhuǎn)良好。

2. →see also sweet