and why too seriously
为什么要太认真
以上为机器翻译结果，长、整句建议使用 人工翻译 。
While old pros Steenburgen and Jenkins sketch in enough detail to suggest where the family dynamics have gone awry, and why the step-brothers would fight to save their marriage, the film never makes the mistake of taking itself too seriously.
CNN: Review: 'Step Brothers' full of funny stuff
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