unidentified flying object; UFO
authorization; authorisation; acknowledgment; acknowledgement; certification; recognition
captain (Army, U.S. Marine Corps, USAF); lieutenant (Navy); flight lieutenant (RAF, RAAF, RNZAF, etc.)
barefoot; superior to (a professional, etc. in ability or achievement)
hypothesis; supposition; assumption; tentative theory
to allow; to enable; to make possible; to make feasible; to permit
creation; generation; formation; derivation
mechanism; organization; organisation
altitude; height; elevation; high-degree; high-grade; advanced
physical law; laws of physics
change; conversion; transformation; transformation
reality; actuality; hard fact
not without its worth; not to be undervalued; not altogether hopeless
reliable; trustworthy; hopeful; promising
another helping; second helping; seconds; command to have dog place its second paw in one's hand
custom; practice; said; aforementioned; instance; example
indicates means of action; cause of effect; by
gliding (through the air)
emergency landing; forced landing; crash landing
just right (time, size, length, etc.)
to burn; to kindle; to heat (a bath); to light (a stove); to use (a camera flash)
mark (for quick identification or recognition); sign; landmark; guide; (arch.) trademark
laying one's head in someone's lap; using someone's lap for a pillow
(outward) looks; features; face; countenance; expression
as a matter of fact; to tell the truth
escape; break-out; prolapse; proptosis
schedule; program; programme; agenda
relaxation (e.g. of muscles); becoming flaccid
wherein; therein; thereinto
to take (someone) with one; to bring along; to go with; to be accompanied by
movement; transfer; migration; mobile; moving; traveling
returning alive; surviving; reaching the home plate
to read the situation; to sense the mood
to bend one's head slightly to one side; to look slightly doubtful
advantageous; favourable; better; profitable; lucrative; gainful
route (bus, train, air, etc.); line; line (taken by a group, organization, etc.); policy; course
to be caught; to be captured; to be taken prisoner; to be seized with (fear, etc.); to be a slave to; to stick to