arm;  skill;  efforts;  ability
 skin;  body (in the context of intimate bodily contact);  surface;  grain (e.g. of wood);  disposition;  temperament
 what kind of;  what sort of;  what;  no matter what (kind of);  whatever;  any
 to be aware of;  to know;  to notice;  to feel;  to understand;  to comprehend;  to remember
 conclusive evidence;  positive proof;  definite proof;  confirmation
 rumination;  regurgitation;  chewing the cud;  turning over in one's mind;  thinking over something;  pondering
 first of all;  at once;  right away;  for now;  for the time being
 to pile up;  to accumulate;  to estimate
 above;  up;  top;  summit;  surface;  before;  previous
 to come to mind;  to pop into one's head
 to write;  to compose;  to pen;  to draw;  to paint
 for a moment;  for a minute;  for a while;  for some time;  for the time being;  for now
 to be worried;  to be troubled
 official;  formal;  formula (e.g. mathematical);  official (social media) account (of a company, organization, etc.)
 junior high school student;  middle school pupil
 considerably;  fairly;  quite
 to take lessons in;  to be taught;  to learn (from a teacher);  to study (under a teacher);  to get training in
 senior high school student
 for example;  for instance;  e.g.
 infinitesimal calculus;  (differential and integral) calculus
 difficult to understand;  unintelligible;  abstruse
 vague;  obscure;  indistinct;  hazy;  ambiguous
 image (in one's mind);  impression;  (computer) image;  depiction (e.g. of a product);  rendition
 to be taught;  to learn;  to take lessons in
 that is to say;  that is;  in short;  in brief;  clogging;  obstruction;  shrinkage
 quantity;  amount;  generosity;  magnanimity;  pramana;  (in Indian philosophy) means by which one gains accurate and valid knowledge
 judging from;  on the basis of;  from the point of view of
 junior high school;  middle school;  lower secondary school
 life;  living;  I;  me;  student
 senior high school;  high school
 of course;  certainly;  naturally
 proper;  right;  reasonable
 entering a higher-level school, esp. going on to university
 (approximate) time;  around;  suitable time (or condition);  time of year;  season
 unintentionally;  inadvertently;  calmly;  casually;  nonchalantly;  innocently