At certain times, apparently, more icebergs from the Arctic Ocean in the far north were traveling south well into the North Atlantic before melting and shedding their sediment.

显然，在某些时候，来自北冰洋最北端的更多冰山赶在融化沉积前向南漂入北大西洋。

youdao

This is only at certain times and on condition that they are processed at factories based near Japanese ports.

只有在特定的时间和条件下，他们才会在设在日本港口附近的工厂进行加工。

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For example, consider checking and returning emails and voice mail messages in batches at certain times of the day instead of continuously throughout the day as you receive them.

举例来说，在一天的某些时间分批来查阅和回复电子邮件及语音留言，而不是持续不断地一整天处理它们。

youdao

So, it's very hard to do it psychologically but at certain times you're in between and you're not going to get the benefit of that.

所以仅靠心理猜测去实施策略是非常困难的,但是有时候你会处在中间位置,你也不会从中获利。

耶鲁公开课 - 金融市场课程节选

Warnings to users (perhaps at certain times and locations), initial authentication, background check requirements, reporting and logging pickup location information and details as to which drivers saw which passenger signals, as well as logging all driver locations on an ongoing basis are some initial suggestions.

FORBES: Smartphone Taxi E-Hail Apps: New Convenience or Potential Deathtrap

Seeking out day light at certain times, and avoiding bright light at other times, are some of the main strategies researchers recommend for resetting the body clock faster.

WSJ: To Avoid Jet Lag This Summer, Travel Like a Scientist

North Korea had issued a warning to mariners to avoid an area in the Sea of Japan at certain times between June 24 and July 9 because of a "military firing exercise, " according to a U.S. military communication about the warning provided to CNN.

CNN: North Korea test-fires more missiles, says Seoul