出国留学首选一诺留学

　　词汇解析

　　1.security guard 保安人员

　　She acknowledged a security guard's friendlysalute.

　　她向一个负责警卫的保镖友好地答了礼。

　　2.focused on 专注于

　　Quality assurance is mainly focused on intended product.

　　质量保证主要关注预期的产品。

　　3.connected to 与...相连

　　He's connected to all the right people.

　　与他有关系的人都是正派人。

　　4.exchanged gunfire 交火

　　Cambodia and Thailand again exchanged gunfire on their border, around the disputed templeof Preah Vihear.

　　柬埔寨和泰国又在边境处、双方均有争议的博威夏神庙附近进行了交火。

　　内容解析

　　1.Obama's comments mark his fifteenth addresslinked to a mass shooting during his presidency.

　　linked to 有关;相关

　　The submission is not linked to any other issue.

　　此协定不与其他任何问题挂钩。

　　How was it linked to the disease-causing virus?

　　它与致病病毒有什么关联呢?

　　2."It appears he was organized and well prepared," Chief Mina said.

　　well prepared 准备充分

　　She has well prepared for the test.

　　她对考试已有充分的准备。

　　The food was plain but well prepared.

　　这些食物很简单，但烧得很好。