More N2 vocabulary

• 盆地ぼんちbasin (e.g. between mountains)
• ひとりでにby itself, automatically, naturally
• 器械きかいinstrument
• 採点さいてんmarking, grading, looking over
• 一昨年いっさくねんyear before last
• 焦点しょうてんfocus, point