defect的词根为fect
例句
1、
There was no positive evidence that any birth defects had arisen as a result of Vitamin A intake.
没有确凿证据证明，摄取维生素A会导致出生缺陷。
2、
Stammering is probably an inherited defect.
口吃很可能是一种遗传性缺陷。
3、
A report has pointed out the defects of the present system.
一份报告指出了当前体制存在的毛病。
