HELEN: Yeah, (Q29 -30) we might have missed some organisms - if they were hiding under a rock, for example.
n. to be in hiding：躲藏；藏匿
Gray is thought to be in hiding in France.
n. to be on a hiding to nothing：白费功夫；白白浪费时间；毫无成功希望
As regards commercial survival, a car manufacturer capable of making only 50,000 cars a year is on a hiding to nothing.
n. to come out of hiding：不再躲藏
The duchess is expected to come out of hiding to attend the ceremony.
n. to go into hiding：躲藏起来
Hundreds of people are said to have gone into hiding to avoid arrest.
He was expecting a hiding when he got home.
So they caught him and gave him a hiding.
He told us to stop, or else we'd get a good hiding.