Sfts
abbr. Standard Frequency and Time Signals 標(biāo)準(zhǔn)頻率和時(shí)間信號(hào)
??? 情景例句
He's like a little doll.
他像個(gè)小洋娃娃。
How did you doing spend your holiday?
你假期怎么過的？
Will you help me plant this tree, please?
你愿幫著種這棵樹嗎？