- 重点词汇
- limitsn.境界( limit的名词复数 );界限;限度;限额;
- forconj.因为,由于;
- cutoffn.近路;运河;新河道;中止;
- operationn.活动;企业;手术;使用;运算;运行;军事行动;
- ofprep. 关于;属于…的;由…制成;
- early and late从早到晚;
- comparisonn.比较;相比;
- were be的过去时复数和第二人称单数形式;有时代替 was,用于条件从句、动词 wish 之后等;
- definedadj.有定义的,明确的;清晰的,轮廓分明的;
- threenum.三;三个;第三(章,页等);
- 相关例句
The petroleum system is divided into the early and late subsystems by generation periods.
据生烃期,寒武系—奥陶系源岩含油气系统进一步划分为早期和晚期两个亚系统.
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Middle age is the term used to describe the transition between early and late adulthood.
摘要中年期是由成熟过渡到逐渐衰老的多变阶段.
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