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。