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- A can is a metal.The tin can can be stored for a long time. 罐头是金属制成的，锡罐可以保存一段很长的时间。
- Be responsible to supervise the treatment of materials stored for a long time. 负责长时间滞留物质处理的监控;
- Lipid peroxides were formed by a series of active group reactions when edible oil was heated or stored for a long time. 食用油受热或放置时间过长会产生一系列自由基反应形成脂质过氧化物，并进一步分解成含羰基、环氧基等小分子化合物。
- They've been dating for a long time. 他们一直频频约会。
- Bcause of its poor stability,the standard sample of lycopene can't be stored for a long time. 因番茄红素的标准样品价格昂贵,且由于本身的稳定性差,不宜长期保存。
- I haven't set eyes on her for a long time. 从那以后，我再也没见过她。
- If the piece has been stored for a long time use a minimal quantity of furniture cream and then polished with a dry cloth. 若您的Club皮具系列已存放一段时间而未曾使用,可使用干布沾取少量的家具保养乳擦拭。
- For a long time his fate hung in the balance. 他的命运很久未能确定。
- She has been ailing for a long time. 她已病了好久了。
- I don't know him well though I've known him for a long time. 我对他并不了解，虽然我认识他已经很长时间了。
- Hello, Carol. How are you? I haven't seen you for a long time. 嗨，卡罗尔，你好吗？好久不见了。
- Conditioned clay can be stored for a long time in cool conditions - some people store it in wads or balls, but I roll mine into sheets using the pasta machine and store flat in layers in a drawer with baking paper between each layer. 已经使用过的陶泥可以在低温的环境下存放很长一段时间，一些人把它存放在密封罐中，但是我通常都是把剩下的陶泥用撵泥机擀成片，在每层间放上烤盘纸，在放进抽屉里。
- I have had no news from him for a long time. 我好久不知道他的消息了。
- He has been grappling with the problem for a long time. 他长期以来一直努力解决该问题。
- Jane's performance will be impressed upon my memory for a long time. 简的表演将会在我的记忆中留下长久的印象。
- I have not heard from John for a long time. 我好久没有收到约翰的来信了。
- He had been short of exercise for a long time. 他长期缺乏锻炼。
- He spoke for a long time but his meaning did not really come across. 他讲了很长时间，但他的意思没有人真正理解。
- I've been committed to attending the farewell dinner for a long time now. 很早以前我就已经答应叁加那个饯行宴会了。
- For a long time he had wanted to take up writing. 很久以来，他一直想从事写作。
