After a helping or two it is acceptable to refuse politely or, more simply, just leave a little uneaten food.
在添过一到两次后可以礼貌地拒绝，或更简单的做法是剩下少量未食用的食物以表示吃饱。
To answer the first two it is necessary to peel away layers accumulated over 510 years since a band of Portuguese explorers landed in what is now Bahia state.
为了回答前两个问题，我们有必要剥开层层历史的外衣，从一帮葡萄牙探险家踏上如今叫布兰卡州的土地开始，这层外衣已经整整沉积了510年。
It is essential to keep the two groups separate.
将这两组隔开是完全必要的。
It is hopeful that two hostages will be freed in the next few days.
两名人质有望在几天后获释。
It is particularly interesting to compare the two versions.
把两个版本加以比较特别耐人寻味。
It is imperative to continue the treatment for at least two months.
必须继续治疗至少两个月。
It is best to take things easy for a week or two.
最好放松一两个星期。
It is our hope that this unhappy chapter in the history of relations between our two countries will soon be closed.
我们希望我们两国关系史上这一不愉快的阶段将很快过去。
The cost is about half as much again as it was two years ago.
现在的价格比两年前提高约一半。
It is a physical impossibility to be in two places at once.
同时身处两地在自然法则上是不可能的。
It is saddening to see that relations between the two countries should have deteriorated to the present state.
两国关系恶化到今天这个地步，是令人痛心的。
一元还是二元？
It is nearly 6 meters long and seats two people.
它将近6米长，可以坐两个人。
It is suggested that sunscreen be applied every one to two hours in a sunny day.
建议在晴朗天气里每隔一到两个小时涂抹防晒霜。
"That notion is not concrete enough, and it blurs two key components of hope," Doctor Snyder said.
“这个概念不够具体。它模糊了希望的两个关键因素。”斯奈德博士说。
It is a misconception to assume that the two continents are similar.
假设这两块大陆类似是种错误概念。
It is still a close contest between two leading opposition parties.
两大主要反对党之间的较量仍然旗鼓相当。
This method has two advantages: first it is cheaper and second it is quicker.
这个方法有两个优点：一是更便宜，二是较快。
It is unlikely that the two sides will be able to bridge their differences.
双方不太可能会克服彼此间的分歧。
By my watch it is two o'clock.
我的表是两点钟。
Divorce is never the fault of one partner; it takes two.
离婚从来就不是哪一方的错；双方都有责任。
Paternity leave is rare and, where it does exist, it's unlikely to be for any longer than two weeks.
父亲享有的产假很难得，而且即便有，也不可能超过两周。
它有两米高。
是一个词还是两个词？
It is irrefutable that poverty and hunger are two of the most critical consequences of overcrowding.
毫无疑问，贫穷和饥饿是过度拥挤的两个最严重的后果。
They are wondering why Act Two is odd and how it differs from Act One.
他们想知道为什么第二幕很奇怪以及它和第一幕有什么不同。
The invasion is known as the Norman Conquest, and it is very important for two reasons.
这次入侵被称为诺曼征服，它很重要，原因有二。
It is called "Two serious ladies".
它叫《两个严肃的女人》。
When it is sleeping, one or two of its arms are still on duty, keeping moving.
在睡觉的时候，它的一只或两只触手依然醒着，会不停地活动。
Each trip lasted between two and four years and it is believed he sailed more than 50,000 km during the years of his travels.
每次旅行持续2到4年，据信，在他的旅行期间，他航行了超过5万公里。
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