这个实用的基础模型较为简略地解释了人类的行为。This basic utilitarian model gives a relatively unsophisticated account of human behaviour.简略的教育体制指南a rough-and-ready guide to the education system他提供的材料过于简略.The material he supplied is too sketchy...
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 )....
我寄了信, 但留了份影印本存档.I sent the letter, but kept a copy for my files.校长把我校的所有报告都存档保存.The principal keeps all our school reports on file.清点完所定购的每一件东西后，将这份记录存档。Once you've checked off the items you ordered, put this record...