当生活很艰难，你想要放弃的时候，请记住，生活充满了起起落落，如果没有低谷，那站在高处也失去了意义。When life gets hard and you want to give up, remember that life is full of ups and downs, and without the downs, the ups would mean nothing.他们将不得不彻底放弃某些研究。They'll hav...
The skills and logistics of getting such a big show on the road pose enormous practical problems.搞如此大型的巡演，无论是技术上还是物流上都面临着巨大的实际问题。Logistics is now more important in our industry than technology.物流目前在我们这一行比技术还重要。The orchar...
His refusal to help simply pinpointed his cowardice.他拒绝帮助正显示他的胆小.Computers pinpointed where the shells were coming from.计算机确定了炮弹发射的位置。Our radar pinpointed the attacking planes.我们的雷达确定了来袭敌机的精确方位....
N - hydroxyethylpyrrolidone ( NHP ) was synthesized from � � - butyrolactone and ethanolamine on Y molecular sieve catalyst by two steps.以改性Y分子筛为催化剂,γ-丁内酯和乙醇胺为原料,采用γ - 丁内酯法两步合成N - 羟乙基吡咯烷酮 ( NHP ).Surface active propertie...