Undercarrier
不足量运送人
🗣️ 情景例句
I can't make up my mind about it.
关于那件事，我还不能做决定。
Progress is the activity of today and the assurance of tomorrow.
进展即今日的活动和明日的保证。
Hi, Jim! It's a long time since we met last!
你好，吉姆！从我们上次见面后已经很久了！