Seventh avenue
na. 纽约市第七街；纽约市妇女服装中心\\n
🧩 词语组成解析
🗣️ 情景例句
you need to work at it, Grandpa.
你得常练它， 爷爷。
The cobbler must stick to his last.
安分守己。
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.
某些大公司进行的研究属于一般和基础性的研究。因此不保密对他们才有利。