What are this cal regarding?

是有关什么事情呢？

CAL is short for Computer Assisted Learning.

CAL是计算机辅助学习的简称。

※After a storm comes a calm. 否极泰来。
※An optimist sees an opportunity in every calamity; a pessimist sees a calamity in every opportunity. 乐观的人在灾难中看到希望；悲观的人在希望中看到灾难。
※As the call, so the echo. 发什么声音，有什么回声。
※Friends are lost by calling often and calling seldom. 交往过密过疏，都会失去朋友。
※If you agree to carry the calf, they'll make you carry the cow. 得寸进尺。
※In a calm sea, every man is a pilot. 平静的海上易驶船。
※Like cow, like calf. 有其父必有其子。
※Lost time is never found again, and what we call time enough always proves little enough. 时间一去不再来，我们常说时间充足，实际。总是不够。
※Many a good cow hath a bad calf. 虎父生犬子。
※Money calls, but does not stay: It is round and rolls sway. 金钱会上门，不会留下来，因为是圆的，所以会滚开。

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