1.metabolize v.使新陳代謝( to subject to metabolism)

例：In virtually all types of tissue in ever}t animal species, dioxin induces the production of enzymes that are the organism's attempt to metabolize, or render harmless, chemical irritants.

同根詞：metabolism(n.新陳代謝)

2.metallic a.金屬的(of, relating to, or being a metal)

詞根記憶：來自metal(n.金屬)

例：Plate movements are the surface expressions of motions in the mantle-the thick shell of rock that lies between Earth's crust and its metallic core.

同根詞：metalize(v.使金屬化)

3.motamorphic a．變質的;變性的(of or relating to metamorphosis)

例：According to the passage, the widely held view of Archean-age gold-quartz vein systems is that such systems were formed from metamorphic fluids.

同根詞：metamorphosis(n.變形;變質)

4.metaphor n.隱喻，暗喻(a figure of speech in which a word or phrase that ordinarily designates one thing is used to designate another, thus making an implicit comparison)

詞根記憶：meta(變化)+phor(常有)--以變化的方式表達--隱喻

例：The candidate's speech contained many metaphors and little substance.

5.meteor n.【天】流星（a bright trail or streak that appears in the sky when a meteoroid is heated to incandescence by friction with the earth's atmosphere）

例：the meteor shower流星雨

派生詞：meteorite(n．隕星)

6.meteorite n．隕星，流星(a meteor that reaches the surface of the earth without being completely vaporized)

詞根記憶：來自meteor(n.流星)

例：Some fullerenes have been found on the remains of a small meteorite that collided with a spacecraft.

同根詞：meteoric(a．大氣的：流星的)

7.meteorological a．氣象學的：氣象的(aerography)

詞根記憶：來自meteorology(n．氣象學；氣象狀態)

例：Mathematical models of the meteorological aftermath of such catastrophic events are beginning to be constructed.

同根詞：meteorologist(n.氣象學家)

8.methane n.甲烷，沼氣(firedamp)

例：Natural gas is composed mostly of methane.