List: HSK 7

1. soap

1. pigeon, dove

nest, den, lair

1. tutor, mentor
2. thesis supervisor, academic advisor

to explain, elaborate, expound

secret, trick, key (to success)

1. nostalgic, to reminisce about the past
2. nostalgia

1. barrier, difference, gap
2. to separate, keep apart

1. opening remarks, introductory speech
2. ice-breaker

1. to set up, to establish, to configure
2. settings, configuration