• vt. 维持；支撑，承担；忍受；供养；证实

sus-,在下，向上，-tain,持，握，词源同 contain,tenure.引申诸相关词义。

sustain (v.)

c. 1300, "give support to," from stem of Old French sostenir "hold up, bear; suffer, endure" (13c.), from Latin sustinere "hold up, hold upright; furnish with means of support; bear, undergo, endure," from sub "up from below" (see sub-) + tenere "to hold" (see tenet). Meaning "continue, keep up" (an action, etc.) is from early 14c. Sense of "endure without failing or yielding" is from c. 1400. Related: Sustained; sustaining.

1. There's a sufficiency of drama in these lives to sustain your interest.

这些人的生活充满了戏剧性，总能让你兴趣盎然。

来自柯林斯例句

2. Their defense markets are too small to sustain economically viable production runs.

他们的国防市场太小，就经济可行性而言不足以维持生产。

来自柯林斯例句

3. The people who sustain the worst losses are usually those who overreach.

不自量力者往往摔得最惨。

来自柯林斯例句

4. Naivety bordering on obtuseness helped sustain his faith.

近乎鲁钝的天真使他坚守自己的信仰。

来自柯林斯例句

5. Which planets can sustain life?

哪些行星可以维持生命的存在？

来自《权威词典》