Nomen dubium
疑难学名
🧩 词语组成解析
n. (古罗马人名的)第二名字, 族名
🗣️ 情景例句
know that I'm running for office
知道我正在竞选公职，
I must be off soon.
我很快就得走了。
An enterprise has to incur certain costs and expenses in order to stay in business.
一个企业为了继续经营，不得不支出一定的费用和开销。