Is it a mortal sin not to participate in Mass on Sundays and holydays of obligation?

主日和当守的瞻礼，不望弥撒，有大罪没有？

youdao

Nobody is a civil Lord, a prelate or a bishop while he is in mortal sin.

没有人会是一个民间的主，一个总主教或主教，而他是在大罪。

youdao

You're in mortal sin, "she said. And ordered with a menacing finger:" Don't think again about what you saw.

“你犯了不可饶恕的大罪，”她说，然后威胁地指着我命令道：“不许再想你刚才看见的事了。”

youdao

Too many are now afraid they'll be accused of being "judgmental, " the secular equivalent of a mortal sin.

FORBES: Fact and Comment

Talk that some were labeling the prime minister an apostate (apostasy, or renouncing the faith, is a mortal sin in Islam) spread quickly.

CNN: Mahathir's Worldly Concerns

Openly criticizing the Civil Rights movement is a mortal sin for politicians, even southern Republicans who obviously attempt to capitalize on lingering racial animus.

FORBES: The Anti-Putin Opposition and the US Civil Rights Movement