single file

1. (uncountable, usually)A line or queue one person wide.

   They walked in a single file.

   Gänsemarsch

1. We walked down the narrow path in single file.

   CK · Tatoeba · CC BY 2.0 FR · B1Open on TatoebaReport a problem

2. The soldiers walked down the path in a single file.

   CK · Tatoeba · CC BY 2.0 FR · A2Open on TatoebaReport a problem

3. The children went upstairs in single file.

   CM · Tatoeba · CC BY 2.0 FR · A2Open on TatoebaReport a problem

4. The students walked in a single file.

   ruУченики шли гуськом. — marafon

   deDie Schüler gingen im Gänsemarsch. — raggione

   Hybrid · Tatoeba · CC BY 2.0 FR · A2Open on TatoebaReport a problem

5. They walk in single file along the path.

   anzart · Tatoeba · CC BY 2.0 FR · A2Open on TatoebaReport a problem

uncountable