In short, a proper module is a black box, responsible for an independent flow (i.e. process). Other modules act upon it via its programming API (i.e. calls to class methods). And it doesn’t allow other modules to query its datasource directly (by bypassing the API).
"It would be ridiculous to expect Selkirk Musical Theatre Group to be the same as a West End or Broadway show but it's getting up there in many respects - in terms of abilities and production values they have done an amazing job."
，这一点在体育直播中也有详细论述
Иран заявил об установлении полного контроля над Ормузским проливом01:09
人 民 网 版 权 所 有 ，未 经 书 面 授 权 禁 止 使 用
Now, given a trie with levels, how do we hyphenate a word? We simply