stem(stemmed, stemmed; stemming)

vt 正式 堵住；阻止

• stem the bleeding 止血

• The government tried to stem the growing discontent of the people. 政府设法遏制逐渐增长的不满情绪。

vi 起源于；由…造成

• Most of the difficulties stemmed from poor workmanship. 大多数的麻烦都是由于工艺落后造成的。