Tr cavity
[電] TR空腔
?? 詞語組成解析
[計] 磁帶記錄器, 磁道, 磁帶駐留, 故障報告
??? 情景例句
then you've got to smile first.
你就得先笑一笑。
One false step will make a great difference.
失之毫厘，謬以千里。
After the train had left the station, the lady opened her handbag and took to her power compact.
火車開出車站后，那位婦女找開了手提包，拿出了粉盒。