I'd prefer the escrow solution, but any of these methods would avoid a prejudicial effect specifically against free software. There may be other solutions that would also do the job.
2
首先,你需要获得一份契约。一旦你获得了这份契约,就可以自由地拿到锁了。
First you need to acquire a lease. Once you have the lease in hand you are free to grab the lock.