Chie
[機械]小型多級臥式變頻泵
??? 情景例句
parents are invited to attend--
家長被邀請來參加
To negotiate the agreement
商議同意
It was necessary, therefore, to invent instruments that neither slumbered nor slept.
因此，有必要發明一種儀器，既不打盹兒，也不睡覺。