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1·There they cool and harden into volcanic ash.

然后在空中它们又冷却变成火山灰。

2·Melted metal is poured into a mold to harden into shape.

熔化之金属倒入模子中以冷却成形。

3·They can harden into a thick cyst, and can leave behind deep, hard-to-remove scars.

他们可以把一个厚厚的囊肿硬化，并能留下深刻的，难以去除的疤痕。

4·Never go to bed angry, the old saying goes, or bad feeling will harden into resentment 1.

有句老话说，千万不要带着怒气入睡，否则糟糕的情绪会转化成怨恨。

5·They become sticky and harden into the shape of the letter c, like a sickle, a hand tool with a curved blade.

红血球会变得粘稠，并且硬化成字母c的形状，像一种有弯曲刀片的手持工具，镰刀。

6·We never eat red meat, Tyler tells me in the Impala, and he can't use chicken fat or the soap won't harden into a bar.

我们从来不吃牛羊肉（红肉）。

7·Plaque needs to be removed through a daily oral care routine which includes brushing and flossing or the plaque will harden into tartar (or calculus).

牌匾需要通过日常的口腔护理，其中包括日常刷牙和使用牙线或斑块会成为牙结石硬化（或演算删除）。

8·Calculus - If left alone long enough, plaque begins to mineralize and harden into calculus or tartar because the plaque absorbs calcium, phosphorus and other minerals from saliva.

牙结石—如果菌斑呆的时间足够长，它就开始矿化变硬形成牙石或牙垢，因为菌斑从唾液中吸收了钙，磷和其他矿物质。

9·Baekeland's original goal was to come up with a shellac and varnish substitute that, after being applied to a piece of wood, would harden into an insoluble state by a chemical reaction.

贝克·兰德最初的目标是找出虫胶和清漆替代品，加入一些木屑后，将硬化成不受化学反应的非溶解性固体。

10·The carbon matting, drenched in resin, is compressed into a mold to harden it.

这种碳垫子，还是树脂制品时就弄湿了，得压缩成型使其变硬。