他自谦地耸耸肩。He gave a self-deprecating shrug.从那时候起他变做世上最自谦, 最有礼貌, 最屡求不倦的求婚人了.From that time he was the most humble, modest, and importunate man alive in his courtship.很明显, 尽管具有自知之明是件好事, 但过度自谦则是有害的.It is clear, while awarenes...
Organic silicate is prepared by Quaternizing, Hydrosilylation addition and Balanced or Polycondensation reaction.有机硅季铵盐是通过季铵化, 硅氢化加成和平衡或缩聚等反应制得.A silicone - polyether copolymer was synthesized by the hydrosilylation of s...