小气: stingy, miserly, narrow-minded, petty...
难为情: embarrassed...
标本: specimen, sample, the root cause and symptoms of a disease...
乐趣: delight, pleasure, joy...
必要: necessary, essential, indispensable, required...
辞退: to dismiss, to discharge, to fire...
紫: purple, violet...
渴望: to thirst for, to long for...
绳子: cord, string, rope...
多年来: for the past many years...
