"高密度海绵"在英文中称为"high-density foam." 来源：这种海绵是通过把聚氨酯（也称为氨基聚脂）经过热压缩而制成的。
例句：
"The seat cushions are made of high-density foam for added comfort." (座椅垫是由高密度海绵制成的，以增加舒适性。)
"This mattress has a high-density foam layer for added support." (这张床垫有一层高密度海绵，以增加支撑性。)
"The helmet is pned with high-density foam for added protection." (头盔里面有高密度海绵垫，以增加保护性。)