最令航天业担忧的是钇供应紧张。钇是高温防护涂层中的关键成分，可防止发动机和涡轮在高温下“熔化”，一旦无法定期施涂相关涂层，发动机便无法正常服役。
"It's not bad, but I also think there's a reason why it's not necessarily blowing up in a massive way, because I don't necessarily think it's original," she says.
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Discord delays age verification plans after user outcry