Security rating

security [sə'kjʊrəti]

n. 安全;保证，担保;保护，防护;有价证券; adj. 安全的，保安的，保密的;

se分开+cur关心+ity抽象名词，性质状态 → 安全；证券

rating ['retɪŋ]

n. 等级;评估，评价;极限;收听率，收视率; v. 估价( rate的现在分词);定级;

rat =calculate 计算 + ing [名词后缀],构成抽象名词 → n. 等级,评定结果，收视(听)率

Richard tells me you're a doctor.

Richard告诉我您是医生。

I went to see a friend of mine.

我去看了一个朋友。

OK, everyone. Less noise, please! Gather round and listen carefully. First we are going to search the beach and the rock pools. Let me remind you what we are looking for: seaweeds, fish, plants, all living things. When you find anything, make a note where

00在这里集合，游泳之后再吃午餐。别着急！我们有足够的时间。