Gigartinales
杉海苔目
??? 情景例句
Tell me the courses you have completed in school and what is your favorite subject?
你曾修讀哪些課程和你最喜歡哪一科？
I took 6 boxes of biscuits.
我拿了六盒餅干。
This depends on the precise radio frequency of the 21-cm wavelength, or 1420 megacycles per second.
這種通訊聯系要靠21厘米波段，即每秒1420兆周的精確無線電頻率。