形容词
中文翻译：无锈的
同义词：
['unrusted', 'unscathed', 'unblemished']
例句：
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1.The metal was rustless when it was first installed.
这金属安装时是无锈的。
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2. The boat is unrustless after being stored for a year.
这艘船在存放一年后仍然没有生锈。
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3. The paint on the walls was unrustless and still looked fresh.
墙上的油漆是无锈的，看起来仍然新鲜。