她在派对上不懂装懂地谈论量子力学。

She ___chattered about quantum mechanics at the party without really understanding it.

他对日语只是略懂皮毛，只能简单问候几句。

He only ___knows a bit of Japanese, just enough to say simple greetings.

他只是肤浅地提了几句气候变化，没有深入讨论具体解决方案。

He just ___smattered a few words about climate change without discussing concrete solutions.