重磅

heavyweight / serious

(of a bomb) powerful / (of news) impactful; significant / (of fabric) heavy-duty

to repeat / repetition / again / re- / classifier: layer

heavy / serious / to attach importance to

see 磅秤 scale / platform balance / (loanword) pound (unit of weight, about 454 grams)

(fig.) sth that produces shockwaves / bombshell (revelation) / blockbuster (product)