详细解释
卅
1、三十。
卅,三十并也。---《说文》。一般写作“卅”。
说文云:“卅,三十也。”今作卅,直以三十字。---《广韵》
是当前之所见,经廿年、卅年而革焉可也。---[英]赫胥黎著、严复译《天演论》
五卅运动
例句
高温廿-卅秒微波玫瑰花露至沸滚。
Bring the rose water to boil in microwave about 20-30 sec. high.
经过卅年密封的文件，现在已经成为公用了。
After 30 years of sealed document, the material has become a public domain.
很高兴收到你们七月卅日的询价，并感谢你们对敝公司产品的兴趣。
We welcome your enquiry of July 30 and thank you for your interest in our products.
每日摄取量由400毫克开始，餐前卅分钟，同时服用两锭效果最佳。
Start with taking 400 mg per day. The best results will be achieved by taking both tablets at least 30 minutes before a meal.
他向我说道：“那海峰在六月卅那天，还在学校里参加毕业礼和接受文凭。”
He says to me: "that sea Feng in June thirty that days be still taking part in to graduate a gift and accepting diploma in school."
梁教授希望搭桥香港大学跟广卅高校联系的平台，将来共同搞活动、互访和科研。
Professor Leung also expressed his wish for increasing the contact between universities in Guangzhou and Hong Kong University, including cooperation on scientific researches and exchange visits.
（干了卅年同样的工作，他觉得枯燥乏味。） 所以要放弃单调枯燥的生活方式，就是。
After thirty years of the same job, he feels he is in a rut.
卅多年前，用比例模型及其全尺寸原型所获得的噪声测量，证实了为预报空泡噪声级和频谱所提出的尺度定律。
Noise measurements obtained over 30 years ago with scale models and their full-size prototypes are shown to verify the scaling laws proposed for predicting cavitation noise levels and spectra.
丹尼：我看一下我们的库存情况。三批货里的第二批我们能在卅天内准备好，所以四十五天的运送时程不成问题。
Danny: I'll look at our inventory. The second third is available in thirty days, so a forty-five day delivery is not an issue.
“彼症持续之久也”，凯瑟琳•布仁狄叹曰，彼乃攻此疾病之南卡罗来纳大学精神病学教授，“然纵卅年后，PTSD亦可治之。”
"It can go on for ever", says Kathleen Brady, a professor of psychiatry at the Medical University of South Carolina who studies the disorder, "but even after 30 years, PTSD is treatable."
他指出，目前百分之卅的土地遭到几百种重金属污染，黄河断流、长江水系崩溃、北方沙漠化，生态难民会是未来三年最严重的问题。
He pointed out that eco-disasters, like soil contamination and land desertification would be some of China's biggest problems in the next 3 years.
一只四盎司的烤鸡腿含有二六五卡的热量及十五点四公克的脂肪，相较之下，同样份量的牛排含有高达三八九卡的热量及卅公克的脂肪。
A 4-ounce roasted chicken leg contains 26. 5 calories and 15.4 grams of fat, compared to as much as 38. 9. calories and 30 grams of fat for an equal portion of steak.
一只四盎司的烤鸡腿含有二六五卡的热量及十五点四公克的脂肪，相较之下，同样份量的牛排含有高达三八九卡的热量及卅公克的脂肪。
A 4-ounce roasted chicken leg contains 26. 5 calories and 15.4 grams of fat, compared to as much as 38. 9. calories and 30 grams of fat for an equal portion of steak.