Ultracentrifuged
v. 用超高速离心器( ultracentrifuge的过去式和过去分词 )
🗣️ 情景例句
and wrote to his wife Martha.
给他妻子Martha写信。
When I get sleepy,I'll probably get ready for bed.
当我磕睡时，我将上床。
The seed was sprayed over the ground in huge quantities by aeroplanes.
飞机把这种草籽大量地撒播在地上。