水不试不知深浅，人不交不知好歹。

Don't try the water depth, people do not pay ungrateful.

youdao

我们一群不知深浅的小丫头们，登船后迫不及待地先去攀岩壁处“打探”。

We do not know the depth of a small girl who, after the board could not wait to go rock-climbing wall "inquire."

youdao

我们一群不知深浅的小丫头们，登船后迫不及待地先去攀岩壁处“打探”。

We do not know the depth of a small girl who, after the board could not wait to go rock-climbing wall "inquire."

youdao