sales became relatively easy
销售变得相对容易
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Also the long expiry date, sales became relatively easy, increased sales volume continuously, increased the economic benefit.
又由于保质期长，销售变得相对容易，销量在不断扩大，经济效益大幅提高。
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