看不见的英文：
unseen

Invisible loss
看不见的损失

Invisible writing.
看不见的笔迹

invisible loss
看不见的损失,蒸发损失

Even though air is invisible, air takes up space.
空气虽然看不见，但它占据了空间。

The poke of her black bonnet hid her face from him.
"她那黑色帽子的前沿遮住了她的脸,使他看不见。"

You cannot tell her beams from hoar frost in the air, Nor from white sand upon Farewell Beach below
空里流霜不觉飞 汀上白沙看不见

disappear from sight;Go out of sight
看不见

Wind is invisible.
风是看不见的。

Invisible to the naked eye
肉眼看不见的

It was so cloudy that the top of the mountain was invisible.
天很阴，看不见山顶。

Bought the horse sight unseen.
未经察看买下那匹马

Is unseen equal to the nonentity?
看不见的，是不是就等于不存在？

Many a flower is Born to Blush unseen.
有许多花儿生来就开著没有人欣赏。

I refuse to buy anything sight unseen.
不见到实物，我不会购买任何东西。

To this something still unseen they gave the name radium.
他们给这种人们尚未看到的东西命名为镭。