The Trump administration’s attempt to sink a UN resolution demanding countries act on the climate crisis has caused cuts to the proposal but hasn’t entirely killed it, according to the tiny Pacific island country spearheading the effort.
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Nature, Published online: 24 February 2026; doi:10.1038/s41586-026-10294-0，更多细节参见新收录的资料
Трамп высказался о непростом решении по Ирану09:14
。新收录的资料是该领域的重要参考
2026-02-22 21:04:33 +01:00，更多细节参见新收录的资料
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。