Acetobacter melanoganum
[機] 黑色醋桿菌
?? 詞語組成解析
[醫] 醋酸桿菌屬
??? 情景例句
At four o'clock,
四點鐘，
He has been to America.
他去過美國。[曾經有過的經驗]
I've been looking forward to visiting your factory.
我一直都盼望著參觀貴廠。