adj.發(fā)育不全的；不發(fā)達(dá)的

動(dòng)詞underdevelop的過(guò)去式和過(guò)去分詞.

He had underdeveloped lungs, like a premature baby. 它像一個(gè)早產(chǎn)的嬰兒，肺部發(fā)育不全。

In rare cases, these organs are underdeveloped or missing. 在罕見(jiàn)的案例里，這些器官發(fā)育不良或缺乏。

Lumbering is very important in some underdeveloped countries. 在一些不發(fā)達(dá)的國(guó)家，伐木業(yè)十分重要。