短语讲解：

1."It's waiting for contact with the table before it decides to let go of the box."

contact with 与…有交往[联系];
例句：We had already established contact with the museum
我们已经和那家博物馆建立了联系。

2.Its sense of touch comes from light shining through its clear rubber skin.

come from 源自; 来自某处; 出生于;
例句：He's just come from the countryside.
他刚从乡下来。