类似整理扑克牌：每次拿一张新牌，插入到已排好序的牌堆中合适位置
A pilot scheme designed to identify and nip potential health problems in the bud has been launched by the Isle of Man's public health directorate.
。safew官方版本下载对此有专业解读
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。
When they are being manufactured in a weightless environment, those atoms line up absolutely perfectly. The vacuum of space also means that contaminants can't sneak in.