拓

邓拓

dèng tuò

wrote under the pen name Ma Nancun 馬南邨|马南邨

开拓

kāi tuò

to break new ground (for agriculture)

开拓性

kāi tuò xìng

pioneering

开拓者

kāi tuò zhě

pioneer

开疆拓土

kāi jiāng tuò tǔ

(idiom) to expand one's territory; to conquer new lands; (fig.) to expand one's business into new markets

代数拓扑

dài shù tuò pū

(math.) algebraic topology

力拓

lì tuò

Rio Tinto (UK-Australian mining corporation)

几何拓扑

jǐ hé tuò pū

(math.) geometric topology

几何拓扑学

jǐ hé tuò pū xué

(math.) geometric topology

必和必拓

bì huó bì tuò

BHP Billiton (Anglo-Australian mining corporation)

拓宽

tuò kuān

to broaden

拓印

tà yìn

stone rubbing (to copy an inscription)