It must have galled him that Nick thwarted each of these measures.
尼克对每一个措施都加以阻挠，这一定激怒了他。
The plural 's' is not a free form, as it must always be attached to a noun.
表示复数的s不是自由语素，必须附着于名词。
It must be conceded that different judges have different approaches to these cases.
必须承认不同的法官会采用不同的方法来判定这些案件。
It must be noted, however, that not all British and American officers carried out orders.
然而，一定要注意，并非所有英美军官都执行命令。
It must be at a rolling boil for at least three minutes.
它必须在沸腾状态下至少煮三分钟。
"If she says that, it must be a nice song," Colin answered.
“如果她这么说，那一定是一首好歌。”科林回答。
If it walks like a duck and quacks like a duck, it must be a duck.
如果它像鸭子一样走路，像鸭子一样呱呱叫，那它一定是一只鸭子。
It must also be done with a profit and remuneration structure that is fair to everyone.
它还必须有一个对每个人都公平的利润和薪酬结构。
It must be really old, about 4 billion years, give or take a few hundred million years.
它一定非常古老，大约有40亿年，有几亿年的误差。
It is vital that once an institution claims to be particularly good at something, it must live up to it.
至关重要的是，一旦一家机构声称自己在某方面特别擅长，它就必须做到这一点。
In order for a chemical to be considered a drug, it must have the capacity to affect how the body works.
为了使一种化学物质被认为是一种药物，它必须具有影响人体运作的能力。
The assumption is that even if this DNA doesn't make up any of the genes, it must serve some other purpose.
这个假设是，即使这个DNA不构成任何基因，它一定有其他的用途。
Critics seem to presuppose that great literature must be somehow burdensome to the reader; it must be difficult for the uninitiated to understand.
评论家们似乎预设伟大的文学作品对读者来说一定是某种负担；外行人一定很难理解。
Toni reckoned that it must be about three o'clock.
托尼想一定是3点钟左右了。
I felt sorry for him and his colleagues – it must have been so frustrating for them.
我很同情他和他的同事们–这对他们来说肯定是非常令人沮丧。
It is strange to think that he held strong views on many things, but it must have been so.
想到当时他对许多事情的观点都很强硬，真是很奇怪，但那时应该就是这样。
—Gina, whose book is this? —It must be Carla's.
——吉娜，这是谁的书？ ——一定是卡拉的。
I'm forty years old now, so it must be at least fifty.
我现在四十岁了，所以它至少也有五十岁。
—Gina, whose book is this? —It must be Carla's. Charles Dickens is her favorite writer.
——吉娜，这是谁的书？ ——这一定是卡拉的。查尔斯·狄更斯是她最喜欢的作家。
Then it must be a popular place.
那么它一定是个受欢迎的地方。
那一定很危险。
你穿起来一定很好看。
It must be near the time for dinner.
一定快到吃晚饭的时候了。
It must be a most unusual exhibition.
这一定是一次非常不寻常的展览。
这一定是卡罗尔的。
这一定是我妈妈。
It must have got into the dough by mistake.
它一定是不小心掉进面团里了。
It must be Jeff's dictionary. Look! His name is on Page One.
这一定是杰夫的字典。看！第一页有他的名字。
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