砂の中に頭を突っ込む

ダチョウ は敵に追われると頭だけ砂に隠すという言い伝えから

見て見ぬ振りをする

image bury their heads in the sand

define bury their heads in the sand

wikipedia bury their heads in the sand

weblio bury their heads in the sand

kotobank bury their heads in the sand

jisho bury their heads in the sand