cave; tunnel; tunnel tomb (Kofun period)
viewing optimistically; thinking optimistically; taking an optimistic view; looking on the bright side
dialogue; conversation; talk; discussion; communication
closely; compactly; leaving no space
centre of explosion; center of explosion; hypocentre; hypocenter; ground zero
to get used to; to get familiar with; to get skillful (in doing); to become proficient
timid; faint-hearted; wimpish
guilty conscience; feelings of remorse
(being) unable to look someone in the eye; (being) too ashamed to face (someone)
overserious; deeply sincere; very earnest
to carry on one's back; to burden oneself (e.g. with debts, responsibilities, etc.)
combination; union; bond; join (in relational algebra)
to drive a wedge into (e.g. enemy defences); to wedge apart
groping in the dark; exploring new avenues without having any clues
handler (esp. of dogs); handler (software routine)
best one could ask for; just what one wants; welcome (news); heaven-sent
trapped with no way of escape; (lit.) rat in a bag
participation; taking part in; participating in; being concerned in
U-turn; returning home (after a vacation); moving back to one's (rural) hometown (after having lived in a big city)
opening (a letter, parcel, etc.); breaking the seal; unboxing (a product); unsealed mail
paper knife; letter opener
at once; immediately; right away; directly (face, lead to, etc.); automatically (mean, result in, etc.)
notification; official notice; directive (e.g. from higher to lower levels of the administration); being well versed (in); being proficient (in)
to die out; to become extinct
leaving a letter behind; letter left behind by someone who has departed; farewell letter
to be transparent; to be easily seen through; to be obvious; to be apparent
to insert; to put between; to tuck (into)
sweet-smelling; fragrant; aromatic; good (reputation, condition, results, etc.); favorable
progress; advance; making (good) progress
unfortunately; unluckily; regrettably
head; chief; leader; the greatest (of all the ...)
assimilation; absorption; adaptation; assimilation; anabolism; assimilation (phonology)
treachery; betrayal; perfidy