She was a wicked and obstinate child.她是个顽皮又固执的孩子。

I gather that he was an obstinate opponent of Schulemberg.我猜想他曾是舒朗贝格的一名顽固的反对者。

He is obstinate and determined and will not give up.他非常顽固, 而且又铁了心, 是不会放弃的。