?洋葱皮
... advice 建议，忠告，劝告 onionskin 洋葱皮，半透明薄膜 intermediate 中间 ...
?薄的半透明纸
... 涂布半透明纸 coated glassine 薄的半透明纸 onionskin 玻璃纸 薄半透明纸 耐油纸 glassine ...
?葱皮纸
... unsound 腐烂变质的 implausible 难信的 onionskin 葱皮纸 ...
葱皮纸
轻量葱皮纸
半透明纸
Mr. Mathews and his designers lay onionskin tracing paper over the maps and brainstorm lifts, slopes and base areas, sketching ideas with pencils.
WSJ: Paul Mathews of Ecosign, Scouting the World for Killer Ski Slopes | Creating
词根：onion
n.
onion洋葱；洋葱头
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