慢速英语:New Way to Prevent Peanut Allergies

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短语讲解：

1. Or at least they used to be.

at least 至少
例句：He's been away for at least a week.
他走了总有一个星期吧。

2. He says the percentage of Israeli children with a peanut allergy is much lower than the rate among Jewish children living in England.

live in 住在学习[工作]的地方; 住在（某地）; 存在于…
例句："I was born in the east, but now live in Los Angeles."
我出生于东部，但现在住在洛杉矶。

3. He says a team of experts have agreed on new guidance for U.S. pediatricians who specialize in children's allergies.

agree on 对某事[物]有同样看法， 商定[同意]某事， 商定做某事
例句：They agree on these terms.
他们一致同意这些条款。