The repeated absences were a red flag that something was wrong.
The sinking feeling in his stomach told him something was wrong.
The hissing referee halted the game, signaling that something was wrong.
My friend's twitching made me worry that something was wrong.
They knew something was wrong at once and called the police.
Supieron que algo iba mal de inmediato y llamaron a la policía.
Her frown was a cue that something was wrong during the performance.
Su ceño fruncido era una señal de que algo iba mal durante la actuación.
The bothering sensation in my stomach hinted that something was wrong.
La sensación molesta en mi estómago sugería que algo andaba mal.
She knew at a glance that something was wrong with her son.
Supo a primera vista que algo andaba mal con su hijo.
Her uneasy glance suggested that something was wrong with the report.
Su mirada inquieta sugería que algo andaba mal con el informe.
I knew straight off that something was wrong when he avoided eye contact.
Supe de inmediato que algo andaba mal cuando evitó el contacto visual.
Off the bat, I could tell something was wrong with her mood.
De entrada, pude notar que algo andaba mal con su estado de ánimo.
A stopping sound from the engine alerted the driver that something was wrong.
Un ruido de parada del motor alertó al conductor de que algo andaba mal.
After the sudden shaking, we knew something was wrong with the machinery.
Después de la sacudida repentina, supimos que algo andaba mal con la maquinaria.