她擦掉嘴角的面包屑。She flicked a crumb off the corner of her mouth.把食物抹上面包屑后过几分钟就炸，这一点很重要。It is important that food be breaded just minutes before frying.她站起身掸掉了毛衣上的面包屑。She stood up and brushed the crumbs from her sweater....
They think of viruses that infect an organization from the outside.They envision hackers breaking into their information vaults.他们考虑来自外部的感染公司的病毒，他们设想黑客侵入到信息宝库中。A newer anti-HIV drug called pyridinone caused HIV to mutate...