with reference to; concerning
关于
detectives are questioning two men in connection with alleged criminal damage.
侦探们正在质问两名与被指控构成犯罪的破坏行为有关的男子。
with reference to this (or that)
在这（或那）方面；关于这（或那）一点
the local Marine Surveyor should be able to assist in this connection.
本地的海务监督应该能在这方面帮上忙。