Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
飞行员对管制塔台的非正式访问,通常作为飞行员训练的一部分。
walk-ups — plural of walk-up
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飞行员对管制塔台的非正式访问,通常作为飞行员训练的一部分。；无需专业设备即可攀登的山。；没有预约就来的顾客；即“walk-in”。；向公众出售食物的室内或室外摊点。；即北扑翅鴷(Colaptes auratus)。
An informal visit to a control tower by a pilot, typically used as part of pilot training.
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飞行员对管制塔台的非正式访问,通常作为飞行员训练的一部分。
An informal visit to a control tower by a pilot, typically used as part of pilot training.
无需专业设备即可攀登的山。
A mountain that can be climbed without specialist equipment.
没有预约就来的顾客；即“walk-in”。
A customer who arrives without a reservation; a walk-in.
向公众出售食物的室内或室外摊点。
An indoor or outdoor stand where food is sold to the public.
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Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.