“缩进”用英语怎么说

鸟把头缩进翅膀下.The bird tucked its head under its wing.猫缩进它的爪子.A cat retracts its claws.乌龟把头缩进它的壳里。The tortoise pulled its head into his carapace....

“缩进”的拼音为：suō jìn...