留恋: reluctant to leave, to hate to have to go, to recall fondly...
肿: to swell, swelling, swollen...
困: sleepy, tired...
茂密: dense (of plant growth), lush...
约: to make an appointment, to invite, approximately, pact, treaty, to economize, to restrict, to reduce (a fraction), concise...
坦率: frank (discussion), blunt, open...
德: virtue; morals; moral character...
有口无心: to speak harshly but without any bad intent (idiom)...
选项: to make a choice (between several alternatives), a choice, an option, an alternative...
温习: to review (a lesson etc)...
