能，会，可以：can, (would) be able to, have the chance/opportunity to do.., get to do
应该：should, be supposed to, shall, have to, must, be required to, it is necessary for sb to
上升，增加：(vi.)increase, go up, rise, (vt.) increase, raise (n.) growth, rise, increase.
下降，减少/小：(vt.) decrease, reduce, lower (vi.) decrease, fall, drop, go/come down, decline. (n.) fall, decrease, decline, drop
变：change, alter, become (different/big/small/..), get, grow
知道，了解，意识到：know, be aware/concious of, realize, get information about
证实
