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By accident In time So far Better still
为变量赋值：$FRUIT=apple 显示变量的值：fruit=apple 显示变量的值：echo $FRUIT 判断变量是否有值：[-f“$FRUIT”]
Above all After all However Otherwise
thinner stabler lighter dimmer
insists on sums up turns out puts forward
tendency advantage inclination priority
by chance in contrast as usual for instance
tended feared happened threatened
moderate overcome determine reach
upward forward afterward backward
tastes tasted smells smelled
fruit; vegetable fruit; a vegetable a fruit; a vegetable a fruit; vegetables
evident obvious incorrect conclusive
fundamental comprehensive equivalent hostile
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