The moon period has to be a full moon or nearly full.
月亮的周期必须是满月或接近满月。
If the solar system has an underachiever, it has to be Venus.
如果太阳系有一个后进生，那一定是金星。
"Not all feminism has to be like this," Jo maintains.
乔坚持认为，“并非所有的女权运动都得像这样。”
The United States has to be careful it doesn't overplay its hand.
美国得注意不要高估自己。
Every decision has to be backed up with rational and cogent arguments.
每项决定都应该有合理和令人信服的论据做支持。
A city is like any product, it has to be packaged properly to be attractive to the consumer.
一座城市就像任何产品一样，需要适当地加以包装来吸引消费者。
In times of financial stringency it is clear that public expenditure has to be closely scrutinized.
财政紧缩时期显然要对公共支出进行严格审查。
Whether to stay in the federated state or become independent is a decision that has to be made by the people.
是否要维持联邦状态或要独立，这是一项必须由人民做的决定。
In every friendship there has to be some give-and-take.
在每一段友谊中都有一些相互让步。
Of course, to really enjoy poetry, it has to be read aloud.
当然，要真正欣赏诗歌，就必须大声朗读。
Mom says the grass is very long and has to be cut.
妈妈说草长得很高，需要修剪。
Factory wastewater has to be cleaned before it goes back to nature.
工厂废水在回归自然之前必须进行净化。
The moon has to be very low in the sky—only 42 degrees from the horizon.
月亮必须在天空中很低的位置——与地平线只有42度。
If not, use a diary or notebook to make notes of what has to be handed in and when.
如果没有，用日记或笔记本记下必须交什么和什么时候交。
This may be because they don't write down exactly what needs to be done, or don't make a note of when it has to be handed in.
这可能是因为他们没有写下具体需要做的事情，或者没有记下何时必须上交。
The other part of the wrapper procedures usually has to be hand-coded.
包装程序的另一部分通常必须手工编码。
It seems to me that something has to be done, if we're to survive as a country.
在我看来，如果我们要作为一个国家生存下去，就必须做点什么。
The heat has to be localized to the hinge in order to have fast and effective folding.
热量必须定位在铰链上，才可以更快更有效的折叠。
That's because we see songs as something that has to be performed accurately each time.
那是因为我们认为，歌曲必须每次都被准确地演奏出来。
If that one is called the land phase, then this has to be called the water phase, right?
如果那被称为陆相，那么这个就必须被称为水相，对吧？
"This story has to be told to honor the passengers and crew for what they did," she says.
“这个故事是为了纪念乘客和机组人员所做的一切。”她说道。
Each of these philosophies is valid and, it has to be said, my son loves visiting his aunt's house.
这些道理都是正确的，而且不得不说，我的儿子很喜欢去他阿姨家玩。
To make the experience truly worthwhile, there has to be a goal behind the decision to study abroad.
为了让这段经历真正有价值，出国留学的决定背后一定要有目标。
If thawed semen is used, it has to be injected directly into the uterus through the ewe's belly wall.
如果使用解冻的精液，它必须通过母羊的腹壁直接注入子宫。
I'm sure you'll recognise the desk—that's still in the same place, as it has to be just inside the door.
我肯定你能认出那张桌子——它还在原来的地方，因为它必须就在门后面。
Language has to be structured in a certain way, or it will be harder to use, he told New Scientist magazine.
他在接受《新科学家》杂志采访时表示，语言必须以某种方式构建，否则就会更难使用。
As I said, variety is important and as for what I don't like, it has to be the checking of charts and tables.
正如我所说的，多样性很重要，至于我不喜欢什么，那就是检查图表和表格。
As I said, variety is important, and as for what I don't like, it has to be the checking of charts and tables.
正如我所说，多样性很重要，至于我不喜欢什么，那就是检查图表和表格。
I think she has to be commended for making an effort to include anecdotes about little known female scientists.
我认为，她为收录鲜为人知的女科学家的轶事所付出的努力，值得赞扬。
It has to be recaptured by watering the plants and, perhaps, by looking again at each one as though it were a person.
必须给植物浇水才能再次捕捉它，可能还要像看一个人一样看看每种植物。
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