by all means
You can say 'by all means' to tell someone that you are very willing to allow them to do something.
'Can I come and have a look at your house?'—'Yes, by all means.'
“我能过来看看你的房子吗?” “可以,当然可以。”
A means of doing something is a method, instrument, or process which can be used to do it. Means is both the singular and the plural form for this use.
The move is a means to fight crime.
这个行动是打击犯罪的一种手段。
The army had perfected the use of terror as a means of controlling the population.
军队极好地利用恐慌来作为控制这里的人们的一种手段。
They didn't provide me with any means of transport.
他们不给我提供任何交通手段。
Mobile phones have overtaken landline phones as the primary means of voice communication.
手机已经代替座机成为语音通讯的主要手段。
You can refer to the money that someone has as their means.
a person of means.
一个富有的人。
by means of
If you do something by means of a particular method, instrument, or process, you do it using that method, instrument, or process.
This is a two-year course taught by means of lectures and seminars.
这是一门通过讲座和研讨会形式讲授的两年制课程。