ceiling

so many false dawns with self-driving, where you think you've got the problem, have a handle on the problem—and then, no, turns out you just hit a ceiling.

但实际上并非如此，结果发现只是撞到了天花板。

But if she's cooking, she's dealing with people on the phone, she's talking to the kids, she's painting the ceiling -- (Laughter) she's doing open-heart surgery over here.

但如果她在做饭，她还得接电话、陪孩子说话、刷天花板——（笑声）简直像是在做开胸手术一样。