to be extremely difficult; to present a major challenge
because; the reason is; if you want to know why
gravity; gravitation; gravitational pull
to differ; to vary; to disagree
heavenly body; celestial body; astronomical object
to take down; to bring down; to drop off (a passenger); to let off; to withdraw (money); to use for the first time; to wear for the first time
vehicle; conveyance; transport; ride (playground, fair, carnival); playground facility
et cetera; etc.; or something; the likes of; for example; for instance
so far; up to now; hitherto; that's enough (for today); it ends here
general idea; concept; notion
even; if only; if just; as long as; the only thing needed
moreover; furthermore; nevertheless; and yet
condition; assumption; intention; intent; premise (in logic)
weight; heavyweight boxer
calculation; reckoning; count; forecast
almost; roughly; approximately
failure; collapse; breakdown; break-up; bankruptcy
to eat oneself out of house and home; to eat up completely
money loser; high-cost, low-return project
counter for small animals; counter for rolls of cloth (two han in size); (arch.) counter for horses; roll of cloth
to keep (a pet or other animal); to have; to own; to raise; to rear; to feed
state; condition; situation; appearance; circumstances
that is to say; that is; in short; in brief; clogging; obstruction; shrinkage
the prospects look brighter; there is hope of accomplishing (something)
thing; object; one's things; possessions; things; something; quality
insufficiency; deficiency; shortage; dissatisfaction; discontent; complaint
to supplement; to make up for; to compensate for; to cover (a shortage, loss, etc.); to fill (e.g. a vacancy)
to receive; to take; to get somebody to do something; to have in one's pocket (a fight, match); to contract (a disease); to catch
form; shape; figure; visage
to become; to get; to result in; to turn out; to consist of; to be composed of; to be completed
happiness; blessedness; luck; luckily; fortunately
to do; to carry out; to cause to become; to make (into); to serve as; to act as; to wear (clothes, a facial expression, etc.)
that way; that direction; that (one); that person; there; over there
launching; launch; end (of a theatrical run, etc.); closing party (e.g. a theater show); cast party
reverse; opposite; converse (of a hypothesis, etc.); inverse (function)
incompletion; incomplete; unfinished
condition; term; requirement; qualification; prerequisite
to be based on; to take into account; to build upon; to have one's feet firmly planted on; to plant oneself on
to say; to utter; to name; to call; to go (e.g. "the alarm went ping"); to make a noise
plan; plot; idea; conception; vision; scheme
to advance; to move forward; to carry forward (plans, work, etc.); to proceed with; to raise; to elevate