介绍:
1) Guinea pig
-They're looking for volunteers to act as guinea pigs for a new AIDs vaccine
-I do not want to be a guinea pig when they test the first hyperloop train
-Joanna opted to be a guinea pig for a new hair shampoo
Definition: is someone is used as a guinea pig, new ideas or products are tested on them
Etymology:Because guinea pigs are one of the few animals which, like humans and other primates, cannot synthesize vitamin C, but must obtain it from their diet, they are ideal for researching scurvy.. Guinea pigs are also used extensively in reproductive studies because their placental structure is similar to humans. 2.5 million guinea pigs used in laboratories in U.S
2) Wear many hats
-The mayor wears many hats since he is also the police chief
-People wanted Goodwin on their team for the survival challenge since he was a man of many hats
-Mikeala wanted her dad to not wear so many hats so he could spend more time with her.
Definition:to have more than one set of responsibilities
Etymology: when everyone wore hats, and many of those hats were specific to a given trade, official position or function. So someone who had several roles would have several hats and would wear the appropriate one for the occasion.
3) Sugar coat
-Simon never sugar coated his criticism towards his employees
-Lawrence sugar-coated his movie review on the new Romance movie because he was being paid money by the director under the table
-It has hard to sugar coat the Queen's speech since she had a cold.
Definition: To cause to seem more appealing or pleasant
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