and; as well as; and so; but (not); yet (not); (indicates causal relation); (indicates change of state); (indicates contrast)[cedict]
当
dāngㄉㄤ
dàngㄉㄤˋ
to be; to act as; manage; withstand; when; during; ought; should; match equally; equal; same; obstruct; just at (a time or place); on the spot; right; just at[cedict]
at or in the very same...; to pawn; suitable; adequate; fitting; proper; replace; represent[cedict]
布什
shí ㄕˊ
Bush (name); George H.W. Bush, US president 1988-1992; George W. Bush, US President 2000-2008[cedict]
拿起
ná qǐㄋㄚˊ ㄑㄧˇ
pick up[cedict]
离心机
lí xīn jīㄌㄧˊ ㄒㄧㄣ ㄐㄧ
centrifuge[cedict]
的
deㄉㄜ˙
díㄉㄧˊ
dìㄉㄧˋ
of; structural particle: used before a noun, linking it to preceding possessive or descriptive attributive[cedict]