... roughen 变粗糙，不平滑 rough facing 端面粗加工 rough forge 粗锻 ...
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rough facing
粗糙的面对
以上为机器翻译结果，长、整句建议使用 人工翻译 。
However, with the advent of numerous competitors and near-universal availability of GPS devices in phones, Garmin is now facing an extremely rough period.
FORBES: Garmin Loses Its Way As Competition Surges
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