题目内容
a. that can be trusted to do sth. well; that you can rely on
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a. (of rules, methods, etc.) very strict and difficult to change
a. unusual or surprising in a way that causes people to take notice
a. not drunk; serious and sensible; v. to make sb. behave or think in a more serious and sensible way; to become more serious and sensible
n. a person whose job is to take care of sheep; v. to guide sb. or a group of people somewhere, making sure they go where you want them to go
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