to speak; to say; a theory (usually in compounds such as 日心说 heliocentric theory)[cedict]
过
guòㄍㄨㄛˋ
(experienced action marker); to cross; to go over; to pass (time); to celebrate (a holiday); to live; to get along; excessively; too-; surname Guo[cedict]
这个
zhè geㄓㄜˋ ㄍㄜ˙
this; this one[cedict]
世界
shì jièㄕˋ ㄐㄧㄝˋ
world[cedict]
以前
yǐ qiánㄧˇ ㄑㄧㄢˊ
before; formerly; previous; ago[cedict]
是
shìㄕˋ
is; are; am; yes; to be[cedict]
很
hěnㄏㄣˇ
(adverb of degree); quite; very; awfully[cedict]
炎热
yán rèㄧㄢˊ ㄖㄜˋ
blistering hot; sizzling hot (weather)[cedict]
的
deㄉㄜ˙
díㄉㄧˊ
dìㄉㄧˋ
of; structural particle: used before a noun, linking it to preceding possessive or descriptive attributive[cedict]