ONE PHRASE, IN CONTEXT
let alone
更不用说;更别提

GET TO KNOW THE MEANING
读懂它,也学会这样说。
01更不用说;更别提
IN A SENTENCE
The team could not finish the first model, let alone test it with customers.
团队连第一个模型都没能完成,更不用说拿去让客户测试了。
He had not packed his coat, let alone checked the weather forecast.
他连外套都没收拾,更别提查看天气预报了。
