Because they lack oxygen, marsh sediments are high in sulfides that are toxic to most plants.

由于它们缺乏氧气，沼泽沉积物中的硫化物含量很高，而硫化物对大多数植物都有毒。

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Most rainforest soils are thin and poor because they lack minerals and because the heat and heavy rainfall destroy most organic matter in the soils within four years of it reaching the forest floor.

大多数雨林土壤都很贫瘠，因为它们缺乏矿物质，而且高温和强降雨会在到达森林地面后的4年内破坏土壤中的大部分有机物。

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A substantial number of mothers with young children are deterred from undertaking paid work because they lack access to childcare.

很多有小孩的母亲找不到人照顾小孩，从而无法从事有薪工作。

《柯林斯英汉双解大词典》

Debbie Pickford of Allstate Insurance says teens are especially at risk from distracted driving -- and not just because they lack experience on the roads.

VOA: special.2010.07.01

Spock is described as not having emotions because he's half Vulcan, from a planet where they lack emotions.

斯帕克没有情感,因为他有半个火神的血统，他来自缺少情感的星球。

耶鲁公开课 - 心理学导论课程节选

Small companies are especially at risk because they lack cash reserves.

VOA: standard.2010.04.12

Unfortunately, because they lack fixed wings to help provide lift, they are also expensive to operate.

ECONOMIST: Monitor

This is partly because they lack credit cards, or enough money to go anywhere.

ECONOMIST: A billion pairs of itchy feet

But because they lack the extensive property rights that we take for granted, their economies are stunted.

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