And they weeded out people who were listed as having anorexia or other conditions that alter body fat.

他们剔除了那些被列为厌食症或其他改变身体脂肪的疾病的人。

Living things evolve by accumulating genetic changes, which are then weeded out or preserved through a process of natural selection.

生物通过累积基因变异而实现进化，之后在自然选择过程中被淘汰或保留。

Gardeners often weeded out the grass to make room for the dandelions.

园丁们经常清除杂草，为蒲公英腾出空间。

A focus on costs has weeded out wasteful practices and improved operational efficiency.

对成本的关注消除了浪费行为并提高了运营效率。

On his arrival in England—or rather, in London—Champneis had weeded out his wardrobe.

Champneis 抵达英国（或者更确切地说， 抵达伦敦）后， 已经清理了他的衣橱。

Over time, populations evolve as traits that help them survive are typically selected, and traits that make it harder to survive are usually weeded out.

随着时间的推移，种群会不断进化，因为有助于其生存的特征通常会被选择，而使其更难生存的特征通常会被淘汰。

But if those mutations don't offer big advantages right away, they get weeded out, and body plans keep looking basically the same.

但如果这些突变不能立即提供很大的优势，它们就会被淘汰， 身体计划看起来基本相同。

Now there were only the well-bound little-read English Classics, which were weeded out of her father's library to fill up the small book-shelves in the drawing-room.

现在只有装订精良、鲜为人知的英国经典名著， 它们是从她父亲的图书馆里淘汰出来的， 塞满了客厅里的小书架。

In the process, the government has weeded out tens of thousands of ghost employees, since the embezzlers who invented them could not open accounts in their names without a matching ID.

在这个过程中，政府清除了成千上万的内鬼，因为盗用公款的人，名不符实，无法开通帐户。

She searched about until she found a rather sharp piece of wood and knelt down and dug and weeded out the weeds and grass until she made nice little clear places around them.

她四处寻找，直到找到一块相当锋利的木头，然后跪下来挖出杂草和杂草，直到她在它们周围开辟出漂亮的小空地。

From an evolutionary adaptive standpoint, you would think that the genes that give rise to such a behavior would be weeded out because creatures with that behavior typically, putting aside modern technology, don't have offspring.

从进化适应性的角度来看，你会认为产生这种行为的基因会被淘汰， 因为具有这种行为的生物通常不会产生后代，抛开现代技术不谈。

Random changes in an organism's genome, some are seriously harmful and quickly weeded out by natural selection, but many are only mildly deleterious and do not much hamper an individual's chance of reproducing as long as conditions are good.

生物体基因组的随机变化，有些是严重有害的， 很快就会被自然选择淘汰，但许多只是轻微有害的， 只要条件良好， 就不会妨碍个体的繁殖机会。