indefinite; hazy; vague; unsettled; undecided
appearance; presence; attendance; surrender (e.g. to the police); turning oneself in
when it comes to ...; where ... is concerned; if it's the case that ...; if it turns out that ...; if it's true that ...
inner moat; moat within the castle walls
to bury (e.g. in the ground); to fill up (e.g. audience fills a hall); to cause to be packed; to plug (a gap); to stop (a gap); to make up for (a loss, shortage, etc.); to make amends
inevitable; unavoidable; certain; brinkmate (inevitable checkmate)
choices; alternatives; options
to worry about (someone's welfare or comfort); to feel anxious about; to have apprehensions of
joy; delight; rapture; pleasure; gratification; rejoicing
to keep (something) a close secret; to hide (the truth, one's pain, etc.); to keep hidden
argument that something is unnecessary; opposition
long time; several hours; long spell
fashion; trend; vogue; prevalence (of a disease); epidemic
(practical) experience; personal experience; hands-on experience; first-hand experience
question and answer session
promotion; acceleration; encouragement; facilitation; spurring on
human experiment; human experimentation; experiment on a living person
establishing proof; demonstration; substantiation
right in the middle (of); midst; height
academic; scholarly; scientific
rational; reasonable; logical
not necessarily so; is not always true; there is no guarantee that ...; there is no telling
in accordance with; according to
desktop (computer); home (game console, CD player, etc.); non-portable; stationary
becoming a pupil (of); becoming a disciple; introduction (to); primer; entering through a gate
compilation (of a text); editing; volume (of a text); completed literary work
learning; acquisition (of a skill, knowledge, etc.)
as a matter of fact; actually; effectively; in reality; in effect
subject; theme; homework; assignment; problem (that needs solving); task
supervision; control; superintendence; director; superintendent; supervisor
presentation (of documents); submission (of an application, report, etc.); production (e.g. of evidence); introduction (e.g. of a bill); filing; turning in
criterion; standard; yardstick; rough estimate; approximation
platform truck; hand truck; trolley; truck; bogie
rail (track); (curtain) rail; track (for a sliding door); groundwork; spadework
from one end to another; thoroughly; completely; utterly
making a round trip; going and returning; round-trip ticket; return ticket; correspondence; exchanging (of letters)
to touch; to feel; to touch (with); to experience; to come in contact with; to touch on (a subject); to allude to
row; line; group (of peers); ranks (of); sequence; series (taxonomic rank)
to poke (repeatedly, lightly); to nudge; to peck at (one's food); to pick at; to peck at (someone's faults, etc.); to egg on
no sooner than; as soon as; immediately after; at the thought of; when I think about