今天我是小老師400字作文

　　1.The methods that a community devises to perpetuate itself comeinto being to preserve aspects of the cultural legacy that thatcommunity perceives as essential.

　　一個(gè)社會所創(chuàng)造出來藉以使其自身生生不息、恒久不衰的方法得以形成產(chǎn)生，以保存在這個(gè)社會看來具有本質(zhì)意義的文化遺產(chǎn)的各個(gè)方面。

　　2.Because the potential hazards pollen grains are subject to asthey are transported over long distances are enormous，wind pollinated plants have，in the view above，compensated for the ensuing loss ofpollen through happen stance by virtue of producing an amount of pollenthat is one to three orders of magnitude greater than the amount produced by species pollinated by insects.

　　由于花粉粒在其長距離的運(yùn)輸過程中所要面臨的潛在危險(xiǎn)是巨大的，按上述觀點(diǎn)來看，由風(fēng)授粉的植物補(bǔ)償了通過偶發(fā)事件而伴隨造成的花粉損失。其途徑是，制造出大于昆蟲授粉的植物種類所產(chǎn)生的花粉量的一至三個(gè)數(shù)量級的花粉量。

　　3.For example，the spiral arrangement of scale-bract complexes onovule-bearing pine cones，where the female reproductive organs ofconifers are located，is important to the production of airflow patterns that spiral over the cones surfaces，there by passing airbornepollen from one scale to the next.

　　例如，帶有胚珠的松球的鱗苞綜合體的螺旋狀安排，亦即松柏目植物雌性殖器官的所在位置，對于氣流模式的形成與產(chǎn)生殊為重要，而這些氣流模式在松球的表現(xiàn)盤旋上升，從而把在空氣中飛行的花粉從一個(gè)鱗苞傳播至下一個(gè)鱗苞。

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