The main damage by typhoon to E. urophylla plantation was stem break-of accounting for 22.5% of trees in the whole trial.

台风对尾叶桉的危害主要表现在造成风折，占整个试验林木的22.5%。

youdao

Researchers say the speech impediment appears to stem from a defectin the gene that regulates the way brain cells break down and recycle waste products.

VOA: standard.2010.02.11

What remains to be seen is whether Freescale's private-equity backers tough it out in the notoriously volatile semiconductor business or try to break up the company and stem their losses.

FORBES: Freescale's Dangerous Passage