半単純加群の英語

Herring shoal

Deer herd together

a nonequivalent control group

（人なら）They come in crowds―（鹿や野馬なら）―in herds―（狼なら）―in packs―（飛ぶ鳥なら）―in flights―（魚なら）―in shoals

They stand in knots.

They come―（人なら）―in crowds―（蛮人なら）―in hordes―（狼なら）―in packs―（鳥なら）―in flights―（魚なら）―in shoals.

a surging crowd

to rise above the crowd―to be distinguished―conspicuous―preeminent

a narrow alcove called a {'handoko'}

in academic researches, minor schools that do not belong to any major schools

They stand in knots （of twos and threes）.

the state of being significantly better than the rest