render useless例句翻译_写作句库

render useless

1.So crop breeders must race to develop varieties with the right R genes before new disease strains render existing varieties useless.

因而农作物培育者需要赶在新型疾病使现有品种失去价值之前，开发具有正确的R基因的品种。收藏指正

2.The sundial could do little more than cast a shadow, when clouds or night did not render it a useless decoration.

日晷只能投影，要是天阴或夜幕低垂，就成了无用的装饰品。收藏指正

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