常見例句雙語例句How were paper birch and Douglas fir communicating?紙皮樺和花旗松到底是怎麼交流的呢？This clump of paper birch trunks was backlit by a blaze of reds and yellows.這一堆紙樺樹的樹乾是由紅色和黃色的火焰來作爲(wèi)它的背光。Paper birch is the best of the hardwood, often running in bursting strength up to 80% and in tearing strength up to 90% of spruce pulp.白樺通常是比較適郃的濶葉木，其漿料的撕裂度可以達(dá)到雲(yún)杉漿的80%，耐破度可以達(dá)到雲(yún)杉漿的90%。 返回 paper birch