高考It has caused an imbalance of species.

它造成了物种的不平衡。

2015年高考英语湖北卷 阅读理解 阅读A 选项

四级Muscle performance can also be affected by a phenomenon called "central fatigue", in which an imbalance in the body's chemical messengers prevents the central nervous system from directing muscle movements effectively.

肌肉表现也会受到一种称为“中枢疲劳”的现象的影响，在这种现象中，身体化学信使的不平衡会阻止中枢神经系统有效地引导肌肉运动。

2017年6月四级真题（第三套）阅读 Section A

四级As a result, the public is divided about whether the imbalance in corporate America will change in the foreseeable future, even though women have made major advances in the workplace.

因此，尽管女性在工作场所取得了重大进步，但在可预见的未来，美国企业界的不平衡状况是否会改变，公众意见分歧。

2019年6月四级真题（第二套）阅读 Section C

四级“And because of the imbalance in marriage markets, especially in older ages, divorced men have more choices among prospective partners than divorced women.

“由于婚姻市场的不平衡，尤其是在老年人中，离婚男性在未来伴侣中的选择比离婚女性多。

2019年6月大学英语四级真题（第1套）

四级It isn’t a requirement that teachers share the same racial or ethnic background as their students, but the imbalance poses challenges, from the potential for unconscious bias to a lack of knowledge or comfort in discussing race and culture.

这并不是要求教师与学生有相同的种族或民族背景，但这种不平衡带来了挑战，从潜在的无意识偏见到在讨论种族和文化时缺乏知识或舒适感。

2020年9月大学英语四级真题（第2套）