引入语，推导语例如于是或由于那个原因，等表现推理的词或词组
A word or phrase, such as hence or for that reason, that expresses an inference.
使用象我们的前任会计这样的词组来指仍然健在不过不掌管相关的职位的人，在字义上是正确的，但是在这样的情况下，former一词能够避免尴尬的误解发生
It is technically correct to use a phrase such as our late treasurer to refer to a person who is still alive but who no longer holds the relevant post, but the use of former in this context will ensure that no embarrassing misunderstanding is created.
下划线划在符号，词或词组下的线，用以表示强调或斜体打印
A line under something, such as a symbol, word, or phrase, used to indicate emphasis or italic type.
背诵很多英文词组很重要。
It is important to learn large numbers of phrases by heart.
