undergoing treatment (medical); receiving treatment
absence; being away from home; house-sitting; house-sitter; being left unattended to (of one's studies, etc.); neglecting
return of something; repayment
dry; dry (tone, humour, etc.); unemotional; dry (of alcohol)
globe-trotting; traveling (around) the world
teasing; banter; ribbing; jest; making fun (of); poking fun (at)
jet aeroplane; jet airplane
control board; control panel; console
second basement level; subbasement
cornerstone; main point; requirement; need; necessary; required
very interesting; of great interest
startup; booting up; activation; starting (e.g. engine, computer); launch
biometrics; biometric authentication
certification; attestation; authentication; Imperial attestation
misrecognition; mistaking (x for y)
to come to mind; to pop into one's head
keeping silent; saying nothing at all
to gouge out; to cut out; to scoop out; to bring to light; to reveal
lightly; nimbly; with agility; casually; readily; regularly
to plan; to form a plan; to scheme; to envision; to intend to do
two characters; two letters; (arch.) garlic chives (Allium tuberosum); (arch.) Chinese chives
barrier; checkpoint; gateway; hurdle; obstacle; trial
baton (relay, orchestral conducting, etc.)
look; glance; sight; summary; list; table
and various other things; and many other things; and more; and what not; and all that
coming and going; keeping in touch; visiting each other; street traffic; highway
shell; husk; hull; pod; chaff
to defend oneself; to protect oneself
process; course; mechanism