cleavages
n.
裂缝( cleavage的名词复数 );
裂痕;
（妇女的）乳沟;
（个人或集团之间的）差异;
例句:
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Increasingly deep cleavages separate one age group from another.
愈来愈深的分歧使不同的年龄群互相分离.
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These cleavages are illustrated in Figure 2.9.
这些裂解在图2.9中有说明.
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Look at these grains. They have twins and perfect cleavages.
看看这些红色矿物颗粒, 它们具有双晶以及完全解理.