carefree; comfortable; at ease; easygoing; happy-go-lucky
to stay long; to hang around; to hang out; to be immersed (in water) for a long time; to soak
to be playful; to gambol; to be amused (with something); to flirt with
university student; college student
practical question (problem); practical matter
natural; reasonable; understandable
about; concerning; as to; regarding
building industry; construction industry; building trade
clear; obvious; evident; bright; light
making efficient; optimization
comfort; ease; easy; simple; (economically) comfortable; raku pottery
because of; on account of; regarding; per; apiece
brain work; mental work; nonmanual labor
letter; missive; note; mail
import; importation; introduction; afferent
to supply (goods, money, etc.); to cover (costs); to pay; to give board; to provide meals
engineering works; civil engineering; public works
to defend against; to protect against; to prevent; to avert; to avoid
regulation; (traffic) policing; control; restriction
being adopted into the family of one's bride
system; organization; organisation; imperial command; laws; regulation
liquidity (esp. financial); fluidity; mobility (social, job, etc.)
underpopulated area; lightly-populated area
means of making contact; intermediary; go-between; connections; influence; pull
to slip into; to crawl into (under); to conceal oneself (under); to sneak into; to infiltrate
substance; essence; real (in economics, vs. nominal, e.g. real interest rate); substantive; substantial
daily employment; hiring by the day; day laborer; day labourer
coolie; laborer; labourer; carrier
coal mine; (coal) pit; colliery
insufficiency; deficiency; shortage; dissatisfaction; discontent; complaint
at present; currently; so far; for now; for the time being