He’s very sound on matters of law.

【sound】他在法律事务方面很有见地。

Revenue collectors, officers of the army and navy, and royal governors were curtly ordered to the front to do their full duty in the matter of law enforcement.

收税员、陆军和海军军官以及皇家总督被简单地命令到前线，在执法事务中尽职尽责。