1.no doubt 无疑;毫无疑问
They have the usual quota of human weaknesses, no doubt.
毫无疑问,他们身上也有人所共有的弱点。
There was no doubt in his mind that the man was serious.
在他看来,这个人无疑是认真的。
2.wash off 洗掉;洗刷掉
No, thick black ink like that won't wash off easily.
不行, 那样的黑墨水不容易洗掉。
Rub down the door and wash off the dust before applying the varnish.
在上清漆前,要彻底打磨这扇门并把尘土清洗掉。