compactly, densely, in a tight group, in a cluster
Снаряды легли кучно.
The shells landed in a tight group.
Люди стояли кучно у входа в театр.
People were standing close together at the entrance to the theater.
Деревья растут здесь очень кучно.
The trees grow very densely here.
Птицы сидели кучно на одном проводе.
The birds were sitting close together on a single wire.
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