a)HAPPYto become more cheerful, active, and interested in what is happening around you, or to make someone feel this way (使)活跃[振作]起来
She seemed kind of tired, but she perked up when Helen came over.
她看上去有点疲倦,不过海伦一来她便精神起来了。
perk somebody ↔ up
There’s no doubt coffee perks you up.
咖啡无疑可以使人精神振奋。
b)SMART/WELL-DRESSEDTIDYto become more active, more interesting, more attractive etc, or to make something do this (使)看起来更为鲜亮[有情趣]
perk something ↔ up
A little chili will perk up the sauce.
加一点辣椒,这酱汁就更有味了。
Examples from the Corpus
perk up• She wasn't feeling too good yesterday but she perked up in the evening.• Jessica always perks up when Richard comes over.
Examples from the Corpus
perk• Stripedshirt and pinktieperked up a little.• Moving the light spot is capable of getting an otherwise silentneuron to perk up and take notice.• Fortunately in the second half the danceperked up.• Though you look as though you could do with something to perk you up.