经过实验，这种细胞已经变得有原来的三倍那么大了。After the experiment, the cell has become {#blank#}1{#/blank#}as {#blank#}2{#/blank#} as it used to be. /After the experiment, the cell has become {#blank#}3{#/blank#} it used to be. /After the experiment, the cell has become {#blank#}4{#/blank#} what it used to be.
