change log; record of updates; update history
arhat (meritorious person, esp. an epithet of Buddha)
different opinion; different thought; another intention; regret at parting; sadness of parting
Scaphopoda (class of molluscs comprising the tooth shells)
that goes without saying but also ...; not only that but ...
convolution; taking in a sail; reefing a sail
(at) our expense; (on) our risk
(lubricating) oil; oiling a machine
to sieve; to sift; to winnow; to screen (candidates)
virtuous cycle; self-reinforcing cycle; upward spiral
coprime; relatively prime; disjoint
ability to discriminate or discern; (powers of) discrimination or discernment
becoming (like) an old man (in one's manner); turning into an old geezer
Greenery Day (national holiday; May 4)
fearfully; timidly; cautiously; nervously
cutting off; cut(ting) out
going insultingly easy on an opponent; not trying one's best (due to the perceived low amount of effort required); licking (as a part of sexual intercourse)
language family; family of languages
percentage of school attendance
complete support; full support