Ectochorion
外绒(毛)膜
🗣️ 情景例句
I'd rather walk than take a taxi.
我宁愿走路去，也不愿坐的士去。
An old dog will learn no new tricks.
老家夥学不出新名堂。
London is on the river Thames.
伦敦位于泰吾士河边。