stream line tracing method 流线追迹法
line tracing 线划跟踪 ; 有划线 ; 轨迹追踪
equipotential line tracing method 等位线追踪法
line tracing router 线路跟踪镂铣机 ; 光电控制镂铣机
On Line Tracing 在线跟踪
on-line tracing 在线跟踪
ridge line tracing 脊线跟踪
You can see that only by tracing a particular family line, possibly back to the 14th century or beyond, will you discover which version of a surname is yours.
你可以看到只有通过追溯一个特定的家族谱系，可能追溯到14世纪或更早，你才能发现哪个版本的姓氏是你的。
If you specify any command line parameters, tracing will be turned on and trace messages will be written to a temporary file in the current directory.
如果您指定任意命令行参数，跟踪将打开，跟踪消息将被写入当前目录中的一个临时文件。
"If you want to." I slid my hands under my thighs and watched as he read it, tracing each line with his finger.
“如果你愿意的话。”我把手塞在大腿下面，观察着正在看请柬的父亲，他用指头一行行边指着边看。
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