； for example biofuel。 科學家希望利用一種綠色環保的能源以替代柴油，比如生物燃料。
要點 短語make use of與utilize的含義相同，都表示“利用”。
valuable［'v？lju？bl］a。 貴重的；有價值的 n。［常 pl。］貴重物品
例句 1。 The acacia trees are a valuable source that provides nutrition for the ants。 金合歡樹是一種有價值的資源，可以為螞蟻提供營養。
2。 The vegetation is considered valuable for its ability to prevent erosion and marshland deterioration。 這種植物可以遏制侵蝕和沼澤地惡化，因此很有價值。
3。 The rare and valuable metals and stones found in the Middle Eastern deserts have always been in high demand in surrounding areas。 附近地區對中東沙漠中發現的稀少而貴重的金屬和石頭有著很高的需求。
visible［'viz？bl］a。 看得見的；明顯的
例句 1。 When an animal is signaling； the colors would not be very visible if it was sitting in a place with a yellowish or greenish background。 當動物發出訊號時，如果它所在的地方有著黃色或綠色的背景，那麼它的顏色將無法被明顯地看見。
2。 Despite all the highly visible technological developments in theatrical and home delivery of the moving image that have occurred over the decades since then； there is no innovation that can be regarded as a similar kind of turning point。 儘管高度視覺化技術在戲劇和家用動態影像呈現方面的發展已超過數十年之久，依然沒有一項類似的創新可以被看做是與之匹敵的轉折點。
3。 Although the real Sun was visible； the birds also kept a constant direction when they moved across the sky。 即使可以看到真正的太陽，但當鳥兒飛翔時，仍然會保持一個方向。
同義 observable； noticeable（a。 明顯的）
warn［w？：rn］v。 警告，告誡；通知
例句 A number of writers have warned that the assumption of such a sequence — a development from the simple and the geometric to the plex and naturalistic — obs