“old hand”概念、定义、翻译-科学时代

单词	old hand
释义	教育学词汇手册 old hand 老手
随便看	mains frequency main shaft main shaft main shaft main shaft main shaft main shaft cap main shaft gland main shaft nut main shaft yoke main-sheet main shock main shoe main smithy main soil group main solenoid main source main source of livelihood main species main spectral line main spindle main spindle main spot main spot mains signal

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。