这些动物安静下来，吃它们的午餐。
雄性动物热情地守护它们的交配对象。
必须把这些事件同它们的历史环境联系起来看。
古董的价值依它们的保存状况和稀有程度而定。
The value of antiques will depend on their condition and rarity.
一些独居的蜜蜂将它们的巢筑在土壤中的洞穴里。
有些列车超载如此严重，以至于它们的悬架都被压垮了。
Some trains were so overloaded that their suspension collapsed.
后果是打断食物链，使许多动物和捕食它们的动物饿死。
The effect was to disrupt the food chain, starving many animals and those that preyed on them.
像氖和氩这样的惰性气体，在它们的外电子层有8个电子。
Inert gases like neon and argon have eight electrons in their outer shell.
海豚偶尔会在戏耍时用它们的尾巴拍打海水或剧烈地翻腾海水。
Occasionally dolphins slap the water with their tails or churn it up in play.
钻石没有多少内在价值，它们的价格几乎完全取决于其稀有程度。
Diamonds have little intrinsic value and their price depends almost entirely on their scarcity.
水闸里注满水时，小鸭子们回到它们的妈妈身旁等待另一艘船通过。
As the lock filled, the ducklings rejoined their mother to wait for another vessel to go through.
虽然这些蔬菜能够适应我们这里的温和气候，但它们的产量常常不高。
Although these vegetables adapt well to our temperate climate, they tend to crop poorly.
它们的喧闹声逐渐变为整齐划一的、带有威胁性的吼叫，还夹杂着刺耳的狂吠。
Their noise modulated to a concerted menacing growl punctuated by sharp yaps.
蜗牛为什么要背着它们的房子？
它们的头骨显示它们没有咀嚼肌。
那些知更鸟占了它们的老窝。
海豚用它们的尾巴游得更快。
它们的甲壳变薄了。
评估它们的后果。
从它们的颜色上很容易知道，制作它们的材料是金和银。
It is clear already from their colors that the materials they're made of are gold and silver.
它们的颜色近乎带淡绿的蓝色。
狮子逼近它们的猎物。
他试探着提出了植物从空气中吸取它们的部分养分的观点。
He ventured that plants draw part of their nourishment from the air.
很难确定一个准确的数字，因为各家公司不愿公布它们的亏损情况。
It is difficult to quantify an exact figure as firms are reluctant to declare their losses.
它们的房价与它们的繁荣息息相关。
目前，蜘蛛还在保守它们的秘密。
颜色对它们的生存很重要。
它们的数字总是以0开头。
它们的高度超过20英尺。
它们的意义远不止这些。
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