Keyless
a. 无键的, 不用钥匙上发条的
🗣️ 情景例句
I'm Elsa Tobin. How do you do?
我叫Elsa Tobin ，你好。
I often go to work in the morning.
我常常在早上去工作。
With experience, and with improved apparatus,
根据经验和改进了的仪器，