itinerant
referring to a person who travels from one place to another, often for work or as part of their occupation
流动的
[形容词]
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登录to itinerate
o travel from one location to another, often on a regular circuit, for a specific purpose or duty
巡回
[动词]
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登录commodity
(economics) an unprocessed material that can be traded in different exchanges or marketplaces
商品
[名词]
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登录reflection
the action or process where a wave, such as light or sound, bounces back from a surface instead of passing through
反射
[名词]
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登录reflector
a photographic accessory used to redirect or bounce light onto a subject, typically consisting of a flat or curved surface made of reflective material
反光板
[名词]
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