settle down
唐氏综合征，又称“先天愚型”。
Down's syndrome
暂无补充释义。
相关词条
touch down
pace up and down
grey duck down
lug down method【环境】
strike down
upside down
milk let-down reflex ( lactation )
Down's syndrome
暂无补充释义。
settle down
touch down
pace up and down
grey duck down
lug down method【环境】
strike down
upside down
milk let-down reflex ( lactation )