Dienanalysis
二烯分析
🗣️ 情景例句
No. No bottle opener.
没有 ，没有开瓶器。
Our packing charge includes $1 for the drum, which sum will be credited on return.
包装费中有1美元是包装桶的费用，此费用在桶还给我们时可退回。
Libraries made education possible, and education in its turn added to libraries: the growth of knowledge followed a kind of compound interest law, which was greatly enhanced by the invention of printing.
藏书使教育成为可能，而教育反过来又丰富了藏书，因为知识的增长遵循着一种“滚雪球”的规律。印刷术的发明又大大提高了知识增长的速度。