例句：
These ink stains won't wash out.
这些墨渍洗不掉。
The ink had faded to invisibility.
墨水已退色看不见了。
The letter was handwritten in black ink.
这封信是用黑墨水手写的`。
The message was written in indelible ink.
这条信息是用不褪色的墨水写的。
These ink stains won't come out of my dress.
我衣服上的这些墨水斑点洗不掉。