大概；大约；约莫 used to show that sth is almost, but not completely, accurate or correct
The journey took approximately seven hours. 旅程大约花了七个小时。
网络解释
adv. 大约，近似地；近于
同、反义词
同义词：
adv.
about,just about,around,roughly,in the region of
prep.
circa,round about,on or about
反义词：
adv.
exactly
双语例句
The conservatory measures approximately 13ft x 16ft. 温室的大小大约是13英尺乘16英尺。
At approximately 11:30 p.m., Pollard finally gave his consent to the search 大概晚上11点半的时候，波拉德最终同意进行搜查。
In the course of the 1930s steel production in Britain approximately doubled 在20世纪30年代，英国的钢铁产量几乎翻了一番。
Take approximately 60mg up to four times a day, unless advised otherwise by a doctor 每次服用大约60毫克，每天最多4次，或遵医嘱。
China is the world's most populous country with a population of 1.1 billion, which makes up approximately a quarter of the world population. 中国是世界人口最多的国家，有11亿，约占世界总人口的四分之一。
China has the world's largest number of terrestial vertebrates, with a total of 1,800 species, which accounts for approximately one-tenth of the same species of vertebrates in the world. 中国陆栖脊椎动物种类居世界第一位，有1,800种，约占世界同类动物总数的十分之一。
Simple cuboidal epithelium is a single layer of cells whose width and height are approximately equal. 单层立方上皮由单层细胞组成，细胞的宽度和高度近似相等。
The asthenosphere corresponds approximately to the low-velocity zone. 软流圈，大体上相当于低速带。
There are about ( or around, approximately) 100 people. 约计百十来人。
These tools help with only approximately half the process contemplated between A and B. 这些工具只对A和B之间预期大约一半过程有所帮助。
This "collection area" holds approximately 20,000 imperial gallons in the bottom of each tank. 这个收集区在每个储油箱底部占据了大约20000英国加仑的空间。
The workload consisted of approximately 60% select statements and 40% insert, update, and delete statements. 工作负荷包括大约60%的选择语句和40%的插入、更新以及删除语句。
Solution of equation is calculated and approximately per-formed, and qualitative explanation and quantitative analysis are made. 并对其解进行了演算与近似演算，做出了定性说明和定量分析。
It's been in the water approximately two years. 他在水里呆了大约两年。
Total analysis time for each specimen was approximately one minute. 每一份样本总的分析时间大约在一分钟。
Approximately in one and a half hour they returned back. 大约一个半小时后他们回来了。
Approximately one-half of this edition is new. 这一版本大约有一半内容是新写的。
Grass green in approximately a week and effects last for over a month. 草绿，在大约一个星期，效果持续了一个多月。
The expenditure is approximately 10% down on the previous quarter. 与前个季度相比，经费大约削减10%。
An equal number of villages and approximately equal numbers of households and women were randomly sampled from both areas. 对这两个区域中相等数量的村庄以及大致相等数量的家庭和妇女进行随机抽样。
I told him approximately when it took place. 我告诉了他事情发生的大概时间了。