Mesochemistry
介子化學(xué)
??? 情景例句
But I'm still a little worried about you, Ellen.
但我還是有點(diǎn)牽掛著你， Ellen。
For some time now, he has contemplated moving to America.
他長(zhǎng)久以來就在考慮移居美國(guó)了。
He has never borrowed money from me.
他從未向我借過錢。