如果你是要去露营、投宿招待所、梳化旅行，这个旅行毛巾是比必不可少的。
The PackTowl is indispensible if you're camping, hosteling, or CouchSurfing.
当然，如果你待在旅馆里，这个话题可以忽略。但是，如果你是露营、青年招待所、沙发客，这个旅行毛巾是比必不可少的。
If you're staying in hotels this isn't relevant for you, of course. But the PackTowl is indispensible if you're camping, hosteling, or CouchSurfing.
免疫接种也是保障动物卫生所必不可少的方法，重组疫苗在专一性、稳定性和安全性方面比传统疫苗更具潜力。
Vaccination is also an indispensable method for maintaining animal health, and recombinant vaccines offer potential advantages over traditional vaccines in specificity, stability and safety.
他现在比布朗先生更能意识到可靠负责的财政政策必不可少，而要推行这种政策，目前他可能处于较为合适的位置上。
He may now be in a better position to promote the fiscally responsible policies that, more than Mr Brown, he has seemed to realise are necessary.
失败只是为了更好的成功，从失败中我们获得的比成功还可贵的东西，经验与考验，这种失败所遗留下的精神是人生路上必不可少的！
Failure is to better success from failure than success, we still get something valuable, experience and tests, this failure the spirit of the legacy is essential to life on the road!
比克·拉姆瑜珈是做了一个热门的余地，以便为这种风格的瑜伽轻服装是必不可少的。
Bikram yoga is done in a hot room so for this style of yoga light clothing is imperative.
比克·拉姆瑜珈是做了一个热门的余地，以便为这种风格的瑜伽轻服装是必不可少的。
Bikram yoga is done in a hot room so for this style of yoga light clothing is imperative.
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