List: HSK 4

1. raw material, ingredient
2. source material

letter of the alphabet

1. charger
2. battery charger

1. circle, ring
2. to encircle, surround
3. pen, enclosure (for animals)

1. postpone, delay, defer
2. extend, prolong

1. extend, prolong, lengthen
2. extension, overtime

1. land, ground, soil
2. territory, area

to smoke (cigarettes, tobacco)

academic year, school year

leaning, science, academics, scholarship