但是，空客主管们认为，波音将面临升级777或者淘汰777的两难选择，后者步子更大而且花费更多。
But according to Airbus executives, Boeing will be faced with the dilemma of merely upgrading the 777 or taking the bigger and more costly step of building a replacement.
淘汰关闭、产业转移、升级转型，是企业整体升级转型的三大基本路径；
Close-out, industrial transfer, upgrading and transformation, is the three basic paths for overall upgrading of enterprises.
而且伴随着ARM等32位微处理器的普及，原来的8位MCU正逐步走向被淘汰的边缘，原有的8位控制系统也面临着系统升级的迫切要求。
Moreover, with the popularization of ARM and 32bit microprocessor, 8bit MCU is moving gradually toward the edge of elimination, the original 8bit control system is also facing the system's upgrade.
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