Overpriced shop-bought sandwiches, underwhelming food from your work canteen or pricey local restaurants.
昂贵的便利店三明治、公司食堂里不尽人意的食物，或者价格高昂的本地餐馆。
If those are the alternatives, then it's unsurprising that many of us think leftovers make the perfect lunch.
如果这些都是其他选择，那么很多人认为剩饭剩菜是完美的午餐也就不足为奇了。
Leftovers are a good way to cut down on food waste.
剩饭剩菜是减少食物浪费的好方法。
If you've cooked them yourself, then you can be sure what all the ingredients are and where they've come from.
如果你是自己烹饪的，那么你就能确定所有食材以及它们的来源。
But how safe are leftovers?
但是剩饭剩菜有多安全呢？
Could there be a danger lurking in your lunchbox?
你的午餐盒里是否会潜伏着危险？
It's not just you that loves your leftovers.
喜欢你的剩饭剩菜的不只是你。
The BBC's Trust Me, I'm a Doctor programme tells us that they are also great for bacteria like listeria, salmonella and campylobacter.
BBC的《相信我，我是医生》节目告诉我们，这些剩饭剩菜对李斯特菌、沙门氏菌和弯曲杆菌等细菌也很有益处。
They can nourish themselves on the food we love and multiply incredibly quickly.
它们能以我们喜爱的食物为养分，并极其迅速地繁殖。
One campylobacter bacterium can multiply to 70,000 million bacteria in just 12 hours.
一个弯曲杆菌在短短12小时内可以繁殖出700亿个细菌。
Food poisoning caused by these bacteria usually makes people mildly unwell but can also cause more serious life-threatening illnesses.
由这些细菌引起的食物中毒通常让人轻微不适，但也可能导致更严重的危及生命的疾病。
What do we need to think about to keep our leftovers safe?
我们需要考虑什么才能保证剩饭剩菜的安全呢？
Temperature control is important to stop bacteria growing on your food.
温度控制对于阻止食物上的细菌生长很重要。
Food safety experts warn of a danger zone between 8C and 63C.
食品安全专家警告说，8°C到63°C之间是危险温度区。
At these temperatures bacteria can grow easily on your leftover food.
在这些温度下，细菌很容易在你的剩饭剩菜上生长。
Refrigerating your leftovers slows bacteria growth, and this is why experts recommend putting your leftover food in the fridge within two hours.
冷藏剩饭剩菜可以减缓细菌生长，因此专家建议在两小时内将剩饭剩菜放入冰箱。
You should also cover any food in the refrigerator because air can contain contaminants, and also, many pathogens need oxygen to grow.
你还应该盖好冰箱里的所有食物，因为空气中可能含有污染物，而且许多病原体需要氧气才能生长。
However, do remember that fridges only slow bacteria growth, not stop it, so most leftovers should only be left in the fridge for two days.
然而，请记住冰箱只能减缓细菌生长，而不是停止，所以大多数剩饭剩菜只应在冰箱里存放两天。
Temperature is also important if you are reheating leftovers.
如果你要重新加热剩饭剩菜，温度也很重要。
Instructions often recommend heating food until it's piping hot or steaming hot throughout.
说明通常建议将食物加热到滚烫或整体冒热气。
Clinical microbiology lecturer Primrose Freestone recommends that ovens be set to at least 163C and that food's internal temperature should reach at least 74C.
临床微生物学讲师普丽姆罗斯·弗里斯通建议烤箱温度至少设定为163°C，并且食物的内部温度至少达到74°C。
Other experts tell us that food heated in the microwave should be stirred halfway through the process so that it's cooked all the way through.
其他专家告诉我们，用微波炉加热的食物应在中途搅拌，以确保完全加热。
Leftovers can be an economical way to cut down on food waste.
剩饭剩菜可以是一种经济实惠的减少食物浪费的方式。
However, it's important that we store and reheat food carefully to make sure that it stays safe to eat.
然而，我们小心地储存和重新加热食物以确保其安全可食用是很重要的。
