1.for instance 比如;举例说
For instance, the same requirement type can be associated with one or more unit type.
例如,同一个需求类型可以与一个或者更多的单元类型相关联
2.all of a sudden 突然地;忽然
All of a sudden she didn't look sleepy any more.
她突然看起来一点都不困了
。3.be comfortable with 感到舒服;对...感到很舒服
Would you be comfortable with a family that smokes cigarettes?
如果接待家庭有人抽烟,你能不能接受?
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