in-,不，非，contestable,有争议的。

1. It caused him to seek to embellish his most incontestable achievements.

这使他想对自己最无可争议的成就加以吹嘘.

2. It is incontestable that the patent technology implementation and industrialization are low here in China.

我国专利技术实施和产业化率较低,是个不争的事实.

3. The proof was incontestable – he had no choice but to admit defeat and plead guilty.

证据确凿,他不得不低头认罪.

4. If be duty already , manage person is in charge of, incontestable meeting produces a problem.

如果是职业经理人来管, 无可争辩地会产生问题.