1

天气

tiānqì

weather

2

一天

yītiān

(colloquial) the whole day one day (twenty-four hours) someday; one day the entire daytime of one day the whole day

3

天冷

tiānlěng

it's cold (weather)

=4

下来

xiàlai

to come down (completed action marker) (after verb of motion, indicates motion down and towards us, also fig.) (indicates continuation from the past towards us) to be harvested (of crops) to be over (of a period of time) to go among the masses (said of leaders)

=4

下来

xiàlái

(used after a verb) down (toward oneself, or figuratively) down (toward oneself, or figuratively) to come down

=5

了

le

(completed action marker) (modal particle indicating change of state, situation now) (modal particle intensifying preceding clause)

=5

了

liǎo

to finish (used with 得 dé or 不 bù after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget") (literary) (usually followed by a negative such as 無 wú or 不 bù) completely (not); entirely (not); (not) in the least to understand clearly (variant of 瞭 liǎo)

=5

了

liǎo

(of eyes) bright clear-sighted to understand clearly

=5

了

liào

unofficial variant of 瞭 liào