acid-proof bottom 耐酸性炉底
beamless water-proof bottom board 无梁防水底板
proof bottom
证明下
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Lawmakers cited a Food and Drug Administration report as proof that PCA cared more about its bottom line than about food safety.
CNN: Peanut company officials spurn Congress' questions
However, I am living proof as the CEO of a recruiting company whose bottom line is very dependent on the hiring fluctuations both in the U.S. and abroad, as well as the general health of American business.
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