Sent_en: 2zh Boeing has already developed new procedures after the crash to prevent ice from building up within their 777 fuel systems after it became apparent that icing may have been a factor, and it was some of these that the Delta flight crew had followed.
Sent_yy: 在估计到结冰可能是导致事故的一个因素之后，波音公司已经在坠机事件发生后制定了新的程序以防止其777燃油系统结冰，而达美航班机组人员后来执行的恰恰是这些程序中的某些步骤。