If you don't learn to laugh at troubles痛苦，you won't have anything to laugh at when you grow old.
Everyone每一个人 is free自由 to express 表达themselves他们自己.
常用词组：express train特快列车
He expressed表达 his dissatisfaction 不满with a poem诗歌.
词根词源：ex出，外向 press压力→向外释放压力，即表达→express表达
前缀：ex外，出
词根：press压力
express动词，表示，表达
express company/delivery/emotions快递公司/快递/情感宣泄
express good wishes/gratitude/祝好运/表达感谢
My dad wants to buy a specially big TV at vast expense.
常用词组：expense claim费用报销
living expense生活费
expense名词，费用近义词：
at the cost/price of以…为代价
spending名词，花费
cost名词，花费
price名词，价格
payment名词，支付
overheads名词，日常费用
词根词源：ex前缀，出，向外 pens支付 e→expenses费用，开支
前缀：ex外，出
词根：pens称重；悬空
It was not a fortune财富 but would help to cover支付 household家庭 expenses费用.
常见词组：
expense account/claim报销账目/费用报销
词形词性变化记忆：expenses名词，花销—expensive形容词，昂贵的—expensively副词，昂贵的expenditure名词，消耗，花费
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