A tabulation of a function of two variables is cumbersome, but possible.二元函数的列表法是不方便的, 然而是可能的.Economic statistics largely consists of the aggregation and tabulation of facts relating to economic life.经济统计学大体上是由与经济生活有关的现实...
典型的割草机发出的声响约为90分贝.The typical lawn mower makes about 90 decibels of noise.割高草时正需要你的大割草机.Your big lawn mower is just the job for the high grass.割草机布满了锈.The mower is covered with rust....