英文: A review of these 13 years shows that we have traversed a tortuous course and that our achievements are hard won.
英文: A tortuous road through the mountains.
英文: Also, as dendrites solidify and shrink in volume, replacement of melt must flow along a tortuous path of interleaving dendrites.
英文: And EU countries should be held to the commitment they all made in October 2005, no matter how long and tortuous the process proves.
英文: Establishing just when this bizarre array of creatures last trod Australia's outback has been a tortuous business, with many false leads and sites that are difficult to interpret.