快速答案
sustar 表示中止行动或效力；suster 表示支撑或抑制某物。
可靠的方法是先判断这个词在句子里的功能，再翻译。
每个词的作用
sustar
to suspend or halt
Use sustar for officially stopping the execution, progress, or effect of a measure.
suster
to sustain, restrain, or hold back
Use suster for supporting something or preventing movement, emotion, or decline.
如何选择
- sustar: Choose sustar if the sentence points to officially stopping the execution, progress, or effect of a measure.
- suster: Choose suster if the sentence points to supporting something or preventing movement, emotion, or decline.
例句
O tribunal decidiu sustar a cobrança.
The court decided to suspend the charge.
Ela mal conseguiu suster o riso.
She could barely hold back her laughter.
常见误区
Their conjugations diverge: ele susta a medida, but ele sustém o peso or o impulso.
放到语境中练习
从你的真实生活中选一个句子，写两遍：一次用 sustar，一次用 suster。如果两个版本都可以，说明意思怎样变化。