This cell can only be an effective barrier if there's no way to get past it.
这个细胞只有在无法通过时才能成为有效的屏障。
I can only imagine how he must have felt, entering the Oval Office in turbulent times.
我只能想象他在那个动荡的年代步入椭圆形办公室时的所思所想。
Of course you can only fit your name and phone number, and in your case, math tutoring on it.
当然，你可以只写上你的名字和电话号码，或者按你的情况，写上数学家教的经历。
Some adjectives can only be used attributively.
有些形容词只能用作定语。
Because of other commitments I can only write my book in fits and starts.
由于还承担着其他任务，我只能断断续续地写书。
They are still temporizing in the face of what can only be described as a disaster.
眼看着灾难来临，他们还在拖延时间。
If you're still skeptical about exercising, we can only ask you to trust us and give it a try.
如果你仍对锻炼持怀疑态度，我们只能请你相信我们，试一试。
We can only try to hold fast to the age-old values of honesty, decency and concern for others.
我们只能努力坚守那些古老的价值观：诚实、正派、关心他人。
You cannot live your children's lives for them; you can only be there to pick up the pieces when things go wrong.
你不能替孩子过活，只能在出现问题时帮忙解决。
You can only use these books there.
你只能在那里使用这些书。
People can only fly rockets into space right now.
现在人们只能把火箭送入太空。
It explicitly states that user Xray can only read.
它明确地声明用户Xray只能读。
One country can only enter one team in tug of war.
一个国家只能有一支队伍参加拔河比赛。
Ideas can only be remembered when they are repeated.
观点只有被重复才能被记住。
The answer can only be soccer, the world's most loved sport.
答案只能是世界上最受欢迎的运动——足球。
You can only use these books there. You cannot take them out.
你只能在那里使用这些书。你不能把它们带出去。
I like the two dresses, but I can only afford either of them.
我喜欢这两条裙子，但我只能买得起其中一条。
It's very interesting, but you can only keep it for two weeks.
这本书很有趣，但是你只能借两个星期。
A weightlifter, for example, can only lift for an hour or two each day.
例如，一名举重运动员每天只能举重一两个小时。
Mike doesn't have enough money, so he can only afford a piece of bread.
迈克没有足够的钱，所以他只能买得起一块面包。
There are some flowers that can only be pollinated by the humming birds.
有些花只能靠蜂鸟授粉。
Don't take it personally—it can only help you give better advice next time.
别往心里去——这只会帮助你下次给出更好的建议。
Some people think drones can only be used by governments to help when needed.
一些人认为只能由政府在需要的时候使用无人机提供帮助。
I don't want to bore you with questions, but I can only turn to you for help.
我不想用问题来打扰你的，但是我只能找你帮忙了。
Truely fluent language can only be learnt on the ground in the native country.
真正流利的语言只有在本土实地才能学到。
We can only imagine what life was like in the 14th century or in classical Greece.
我们只能想象14世纪或古典希腊的生活是什么样子。
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