找一本大一点的纯英文字典你问的都有，自己慢慢琢磨就都有了。
例如 defect：
1. a lack of something necessary for completeness or perfection; shortcoming; deficiency
2. an imperfection, failing, or blemish
3. (Chemistry) crystallog a local deviation from regularity in the crystal lattice of a solid. See also point defect, dislocation.

        2.        defect - a failing or deficiency; "that interpretation is an unfortunate defect of our lack of information"
shortcoming
disadvantage - the quality of having an inferior or less favorable position
        3.        defect - an imperfection in an object or machinedefect - an imperfection in an object or machine; "a flaw caused the crystal to shatter"; "if there are any defects you should send it back to the manufacturer"
flaw, fault
imperfection, imperfectness - the state or an instance of being imperfect
4. (intr) to desert one's country, cause, allegiance, etc, esp in order to join the opposing forces
[C15: from Latin dēfectus, from dēficere to forsake, fail; see deficient]

Defect, flaw refer to faults, both literal and figurative, that detract from perfection. Defect is the general word for any kind of shortcoming, imperfection, or deficiency, whether hidden or visible: a birth defect; a defect in a plan. A flaw is usually a structural defect or weakness that mars the quality or effectiveness: a flaw in a diamond.
例句
The report pointed out the defects in the present system.
He defected from the party twenty years ago，

你就搬着字典一个一个查你要的都在纯英文字典里面

你这种问题千万不要去查英汉字典

感觉，其实你要是不是在谈很专业的问题，区别没有想的那么大。

https://www.bbc.co.uk/worldservi ... t/learnitv341.shtml
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