關鍵字彙：
alloy/ corrode/ dissect/ ductile/ erode/ extinct/ extract/ fauna/ fiber/ flora/ foliage/ habitat/ homo sapiens/ hybrid/ indigenous/ nugget/ parasite/ tarnish/ weld
1. 酸鹼等的「侵蝕」或「腐蝕」可用corrode或erode。但erode用得廣泛許多，雨水、海水、風等的侵蝕都包括其中：
•Acid causes metal to corrode.
•Rust has corroded the steel rails.
•The sea erodes the rocks.
•Wind and rain have eroded the statues into shapeless lumps of stone.
•The cliffs are eroding away several feet a year.
•The coast is slowly eroding away.
2. 使物體「失去光澤」，用tarnish：
•Acid and salt tarnish silverware.
3. 「提煉」或「萃取」，用extract：
•A variety of chemical substances can be extracted from petroleum.
•They are extracting gold from the rocks.
•The oil is extracted from cottonseed.
4. 把金屬「銲接」在一起，用weld：
•Iron and copper weld easily.
5. 「合金」叫alloy；金屬「可延展的」叫ductile；「塊狀貴金屬」叫nugget：
•Bronze is a hard alloy mainly of copper and tin.
•Gold is more ductile than most of the metals.
•The miser gloated over the single nugget of gold and was satisfied and content.
6. 動、植物「原產自…的」用indigenous，它們的自然棲息地叫habitat：
•Kangaroos are indigenous to Australia.
•Rice is indigenous to China.
•The gorilla is said to be quite gentle in its own habitat.
•Taiwan is not the habitat of durians.
7. 動、植物的「雜交」叫hybrid，它們「已滅絕的」叫extinct：
•The mule is a hybrid of the donkey and the horse.
•According to a UN report, millions of animals and plants will be extinct in the future.
•The mammoth has been extinct for a long time.
8. 某地區或某時代的所有動物叫fauna，所有植物則叫flora：
•The scientist could visualize the fauna of the period by examining the skeletal remains and the fossils.
•As a botanist, she spent most of her time studying the flora of the desert.
9. 植物的「纖維」叫fiber，葉子的總稱叫foliage：
•Some plant fibers are spun and woven into cloth.
•Foliage wavers in the breeze.
•This is a forest of beautiful foliage.
10. 「解剖」動、植物叫dissect；「寄生蟲」或「寄生植物」叫parasite：
•Some girl students could not stand seeing the frogs dissected.
•I didn't eat those clams with the fear that there might be parasites.
11. 生物學上，「人類」一般用拉丁文homo sapiens：
•Homo sapiens will be doomed when a nuclear war is launched.
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