| 詞彙學習 |
[適當] fitness; correct conduct; quality of being proper; appropriateness | |
[迅速增長,倍增,擴散] rapid growth; spread; increase in size by reproduction | |
[隨意混合的,打亂的,隨便的] having casual sexual relations frequently with different partners; casual and unrestrained in sexual behavior | |
[自然傾向] natural inclination; tendency or preference; predilection |