to be wet (with tears); to be moist; to get dim; to become blurred; to become tear-choked
flow (of a fluid or gas); stream; flow (of people, things); passage (of time); course (of events); (step-by-step) procedure; group of people who remain together after the end of an event
treatment (of a person); dealing with
just a handful; only a small number (of)
direct control; direct supervision
a handful (of); small amount (of); small number (of); trouncing; crushing
to hesitate to say; to mumble; to hem and haw; to falter
to hesitate to; to waver; to be hesitant about
to succeed; to relieve; to take the place of; to substitute for; to be exchanged; to change (places with)
altitude; height; elevation; high-degree; high-grade; advanced
kilo-; 1000; kilogram; kilogramme; kilometre; kilometer
return (to); revolution; recurrence; regression
orbit; trajectory; (railroad) track; (right) track; proper course
going around; orbiting; circling; circumference; girth; surroundings
to live (of humans); to reside; to inhabit; to dwell; to abide
manned; occupied; piloted
making use of; application; practical use; operation (esp. of a boat); steering
(not) so much; (not) that much
cold; coldness; chilliness
change to ...; becoming ...; making into ...; -ization; -ification
regularization; regularisation; getting up speed; proceeding at full tilt
to lose; to miss (a chance, opportunity); to lose (a loved one); to be bereaved of; to concede (goals, points, etc.)
experiment; experimentation
weightlessness; zero gravity
in; at; on; as for; regarding; with regards to
research vessel; research ship
prototype model; experimental machine
practical; useful; utilitarian; pragmatic
unmanned; uninhabited; unattended; shorthandedness; lack of help
artificial satellite; man-made satellite
to suffice; to serve the purpose; to be satisfied