英文解釋in balance,out of balance

1. In balance (adv)
總而言之

2. out of balance
out of balance 意思是「失衡」

例句：When a number of species are extinguished, the entire ecology is said to be out of balance. Hence, a series of natural disasters may occur and give impact to the other parties, including human beings.

(當某些物種絕種，整個生態系統便失去平衡，導致一系列自然災害，最終會威脅其他物種，包括人類)

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out of ... 的意思是指「失去...」﹑「沒有...」

例如：

out of control 失去控制

out of stock 沒有存貨

out of breath 沒有氧氣(缺氧)

out of patience 失去忍耐力(沒有耐性)