Phototransistor
n. 光電晶體管\\n[計] 光電晶體管
??? 情景例句
and wrote to his wife Martha.
給他妻子Martha寫信。
I can't tell you how happy this makes me.
我形容不出來我有多高興。
They don't often have a bad day this year.
他們今年的運氣還不錯。