由于这些数据有时相互矛盾，而且其机制也不时发生明显的变化，这些研究变得复杂起来。
The studies are complicated by the fact that the data are sometimes contradictory and the mechanisms apparently change from time to time.
无论你是人际关系网的高手还是新人，总会时不时遇到一些挑战，而有时我们就需要依靠其他人的鼓励和帮助来渡过难关。
Whether you're a master networker or you're new to networking, we all face challenging situations at times, and sometimes we need to rely on the help and encouragement of others.
然而，有时候项目经理并不知道小的范围变更时不时会被追加进来。
However, sometimes the project manager doesn't recognize the small scope changes that get added over time.
到了周末，在城市里的购物中心通常都会看到这样的场景：印尼父母们有时会用蹩脚的英语跟他们的小孩子讲话，跟着的保姆也时不时说几个他们会说的英语单词。
It is a sight often seen in this city's malls on weekends: Indonesian parents addressing their children in sometimes halting English, followed by nannies using what English words they know.
直到1970年，裤子都不时髦，有时候女性在美国的办公室、教室和餐厅穿裤子是违反法律的。
Until 1970 it was not fashionable and sometimes against the law for women to wear pants in offices, classrooms, and restaurants in the U.S..
时不时地我会发现屋舍楼上卧房的灯光，有时屋内发出声音——婴儿的哭声，夫妇相骂的声音，开大电视的声响。
From time to time I would spy a light on in an upstairs bedroom, sometimes the sound of voices raised - a baby crying, a couple squalling, a TV turned up loud.
不时地，我会想到那位老师，回忆起她给我们留下的深刻印象，我便会尽力去欣赏有时我们都忽略的东西。
Every once in a while, I think of that teacher and remember what an impression she made on all us, and I try to appreciate all of those things that sometimes we all overlook.
你总会愤愤不平的抱怨女人会花你的钱，但想想那些花在约会，还有时不时的礼尚往来上的开销，这些钱又算什么呢。
You cynics out there gripe about the money women cost you, but the money you'd spend on dinner dates and the occasional gift is dwarfed by the prospect of having an extra income in the household.
作为一个副锋，这位快速成长的前锋不时也会进球，有时也会回撤帮助中场甚至后卫。
Playing in a support striker role, the rapidly maturing forward has chipped in with the goals while also tracking back to help midfield and defence.
向外国选手致以的礼貌掌声不时退化成嘘声，或者，有时干脆出现一个一半空空如野的体育场- - -尽管之前宣布所有的奥运门票已经销售一空。
Polite applause for foreign competitors occasionally degenerated into boos or, just as bad, half-empty stadiums -this despite vows that all Olympic tickets had been sold.
不时的，我会想到那位老师，回忆起她给我们留下的深刻印象，我便会尽力去欣赏有时我们都忽视的东西。
Every once in a while, I think of that teacher and remember what an impression she made on all of us, and I try to appreciate all of those things that sometimes we all overlook.
因为朋友有时会伤害到你的感情，也可能会时不时地令你失望。
Your friends will hurt your feelings sometimes and will likely disappoint you from time to time.
有时他似乎觉得他听到自己不时重复地说道，“带我回家去！”弗洛伊！
He fancied sometimes he had heard himself repeating, 'Take me home, Floy!
电脑有时几天都不重新启动，但一启动的话就会时不时重启。
Sometimes days are not restarting the computer, but a start, they would have to restart from time to time.
汇率会不时地波动，有时一美元值十二墨西哥比索，有时只值八比索。
Sometimes a United States dollar is worth twelve pesos in Mexico.
有时候，我徒步行走，幕天席地宿营，还不时有当地人再三盛情款待，得以免费吃喝。
Occasionally, I travelled on foot, slept out under the stars, and dined for free at the stubborn insistence of local hosts.
他不时站起身，在屋里走来走去，有时拿起几本零散的书，然后又没精打采地把它们放进箱里。
From time to time he rose and wandered about the house, picking up stray volumes and bringing them listlessly back to his box.
外出旅游时一定要带好必备的药物以备不时之需。有时在外面会很危险。
Traveling abroad must take the good essential drugs for emergency use. Because sometimes on the outside would be risky.
你看，在内地用代理服务器登陆有时很累人，因为时不时地连结就断了。
See? In mainland it's exhausting to use proxy server since the connection is often broken.
我们的心不时与我们玩把戏，以致有时我们真假不分。
Our minds play games with us at times. Sometimes we can barely distinguish fantasy from reality.
如在通信网络中，有时候某条线路中断，则需要找一个替代的方案，这就需要找到几条最短路以备不时之需。
If the communication network, and sometimes interrupted on certain routes, you need to find an alternative solution, which needs to find the shortest path for a rainy day a few.
如在通信网络中，有时候某条线路中断，则需要找一个替代的方案，这就需要找到几条最短路以备不时之需。
If the communication network, and sometimes interrupted on certain routes, you need to find an alternative solution, which needs to find the shortest path for a rainy day a few.
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