tummy; tumtum; bang-bang; pop-pop; without reservation; unreservedly
difficult; tough; formidable; redoubtable; stubborn
continent; continental Asia (esp. mainland China); continental Europe
to drive into; to ride into; to extend (a railway line, bus route, etc.) into; to link (a railway line) with; to join up with (a separate line)
premises; grounds; campus; compound; precincts
here and there; all around; everywhere; to get things in the wrong order (back to front); to become muddled up
steam; vapour; vapor; steamboat; steam locomotive
evacuation; emission (e.g. of CO2, etc.); ejection
platform; home; home base; home plate
to mistake (A for B); to misread
green; emerald green; green color of new foliage; verdure
rolling stock; railroad cars; wheeled vehicles
transcontinental railroad
each nation; many nations; many countries
crossing; traversing; traversing horizontally; passing west to east (or east to west); cutting horizontally
distance travelled; mileage
attending (school, college, etc.); being enrolled; being a student
travel; trip; journey; excursion; tour
large; large-sized; large-scale; big
to lay aside; to set aside
seeing one off; farewell; escort
to speak to; to give a (something) talk to; to speak words of (something)
next (year, spring, etc.); coming; since (last month, etc.); for (20 years, etc.)
back; rear; background; behind the scenes
restless; fidgety; in a hurry
somersault; returning from a destination right after arriving there; non-stop round trip; abrupt change of direction
before very long; soon; someday; of the previously mentioned; of that number; among them
to come off; to be removed; to disappear (of pain, a fever, etc.); to be caught; to be harvested; to be interpreted (as); to be taken (as)
laboratory; seminar room; professor's office
bacterium; bacteria; germ
cultivation; nurture; culture
split; division; break up
to bring up under one's personal care
to raise; to rear; to train; to teach; to promote the growth of; to nurture
strawberry (esp. the garden strawberry, Fragaria x ananassa)
childhood friend; friend from infancy; old playmate
to ripen; to mature; to be ready for action; to be the right time (to act); to be in common use; to come to sound natural
knob; handle; snack (to have with a drink); side dish; a pinch (e.g. of salt); (file) handle
(approximate) time; around; suitable time (or condition); time of year; season
unpleasant; disagreeable; nasty; lewd; lascivious; obscene
to differ; to be different; to run counter to; to change (into something out of the ordinary)