Going back and forth between two homes can be tough, especially if parents live far apart.

在两个家之间搬来搬去很不容易，特别是当父母的住处相距遥远时。

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However, on many occasions Agile teams have a tough time deciding between the two.

然而，在很多情况下，敏捷团队会难以在二者之间做出选择。

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A tough non-absorbable stitch is used to bring together the two skin edges and these are left in for between a week and 10 days.

切口两边的皮肤边缘可用较硬不可吸收的缝线缝合，之后观察一周至10天。

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He has been having a tough time choosing between the two remaining candidates.

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Many might have expected a tough physical battle between two teams who have been somewhat dogged by negative headlines for a few instances of poor tackling this season.

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The Cranes Scottish coach Bob Williamson was happy with the result pointing out that matches between the two countries are always tough.

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