The phrase "a time when rats" is correct and usable in written English.
It can be used in contexts discussing historical events, anecdotes, or metaphorical situations involving rats.
Example: "There was a time when rats overran the city, causing panic among the residents."
Alternatives: "an era when rats" or "a period when rats".
The present study was designed to determine whether head direction tuning is present at even earlier ages, before the eyelids open and at a time when rat pups still spend nearly all of their time in the nest [ 12].
However, SLOPE did not affect stance time when rats walked with additional load (Fig. 5).
Hypercaloric high-fat diets have been associated with impaired cardiovascular recovery from stress and the development of arterial hypertension at night, the time when rats are behaviorally active; animals presented unchanged resting blood pressure values [ 38].
He lived in an exceptionally seedy, rat-infested Times Square hotel, full of Senegalese immigrants, at a time when Times Square was dangerous and crime-ridden.
Mr. Cohen acknowledged that union officials had discussed the presence of the rats at a time when children were coming into the school.
The Council's rat agenda comes at a time when the number of complaints is growing and Mayor Michael R. Bloomberg has already declared zero tolerance for rats.
The inhibitory effect on degranulation lasted for up to 6 h post inoculation, a time when all control and S. typhimurium infected rat PMN were degranulated.
Analysis of BrdU labelling in injured carotid arteries 7 days after angioplasty, a time when neointimal cell proliferation peaks in the rat carotid injury model, revealed abundant BrdU-labelled neointimal cells with sparser labelled cells present in the adventitia or media.
Mixing refugees, Muslims, terrorists and rats together stokes public anxiety and encourages division at a time when unity is sorely needed – a highly irresponsible and potentially dangerous act.
