Translation at in the English-Italian Collins dictionary

at prep

a  (position) a , (direction) verso
to aim at the target  mirare al bersaglio
at the bottom of the page  a fondo pagina
at the desk  al banco
to stand at the door  stare sulla porta
at home  a casa
at John's  da John, a casa di John
at the office  in ufficio
to look at sth  guardare qc
at school  a scuola
at the top  in cima

b  (time) at Christmas  a or per Natale
at night  di notte
at 4 o'clock  alle quattro
at a time like this  in un momento come questo
at times  talvolta

c  (rate) a
at 50p each  a 50 pence l'uno(-a)
two at a time  due alla or per volta

d  (activity) to be good at sth  riuscire bene in qc, essere bravo(-a) in qc or a fare qc
while you're at it  fam già che ci sei
she's at it again  fam eccola che ricomincia, ci risiamo
he's always (on) at me  fam mi tormenta continuamente
to play at cowboys  giocare ai cowboy
to be at work  essere al lavoro, stare lavorando

e  (manner) at 50 km/h  a 50 km/h
at peace  in pace
at a run  di corsa, correndo
at full speed  a tutta velocità

f  (cause) annoyed at  seccato(-a) per
I was shocked at the news  sono rimasto colpito dalla notizia
at his suggestion  dietro suo consiglio
he was surprised at her reaction  lo stupì la sua reazione