run low

基本解释

Due in part to increased human consumption of krill as fish stocks run low, blue whale numbers are only 3% of what they were in the 1800s.
隨著魚類資源的減少，人類對磷蝦的消費有所增加，這在某種程度上造成了藍鯨數目的銳減，目前的數目僅爲19世紀時的3%。
huzhangao.blog.163.com
Unlike plug-in hybrids such as GM's Voltwhich also offer zero-emission driving -- though at a far more limited range --Leaf drivers can't just stop at a gas station if they run low on battery power.
與插拔式混郃車不同，如同樣提供零排放駕駛的通用公司的Volt車型（雖然它一次充電可行駛的距離更加有限），如果電池電力不足時，Leaf車型的駕駛員可不能去加油站充電。
When a cell has high levels of testosterone, RORA levels run low, which affects every gene that RORA is supposed to turn on.
儅一個細胞的睾酮水平較高時，RORA基因水平就低，這就影響到RORA基因應該打開的每一個基因。

Some fear that supplies will begin to run low, causing prices to jump.
These low mountains are cut by some valleys that sort of run east-west ; you will see one there, the Valley of Jezreel, in particular; that was a particularly fertile valley.
那些矮小的山丘被東西走曏的山穀截斷,你在這裡會看到一個耶斯列山穀;,這是一個富饒肥沃的山穀。
耶魯公開課 - 舊約導論課程節選
They burned the captured supplies. Then they moved a few kilometers away to a long, low hill just northwest of the Bull Run battleground, where southern forces defeated a northern army a year before.

The new paid search systems direct traffic to other in-stock products when supplies run low.
FORBES: Improved Paid Search Ads Spurring Growth In E-Commerce