Intervillous lacuna
[醫(yī)] 絨毛間腔隙
?? 詞語組成解析
[醫(yī)] 絨毛間的
lacuna
[[l?'kju:n?]]
n. 空白, 空隙, 闕文\\n[醫(yī)] 腔隙, 陷窩
??? 情景例句
And excited, too.
也很興奮。
I know the boy whose father is a mailman.
我知道那個男孩的父親是郵差。
but belongs to the air, travelling it may be six thousand miles to and from its northern nesting home, feeding its flown young as it flies,
在空中十分自如，可以飛行6，000英里，可以飛往北方做窩的老家，再從老家飛回；一邊飛一邊喂養(yǎng)會飛的雛燕，甚至在頂風(fēng)時也能在氣流中滑翔，似乎氣流在幫它前進。