记号

This is where my sword fell off, so I made a mark.

这是我宝剑落水的地方，所以我要刻上一个记号。

A student of mathematics must become familiar with and fix in mind the signs and symbols, the definitions and technical terms in mathematics, in order that he may be able to have the foundation of the mathematical subject and master it well for further study.

为了能打下数学基础，掌握好数学，以便进一步学习深造，一个学数学的人必须熟悉并牢记数学中所用的记号和符号，定义和术语。

I've flagged the paragraphs that we need to look at in more detail.

我已用特殊记号标出我们需要更详细考虑的段落。

Any white portion of the coat may be flecked with ticking.

被毛上的任何白色部分可以是带记号的斑点。

Home of the night, quiet but not significantly flirtatious, always in my heart outline mark of love.

家乡的夜，静谧却不显妖艳，总是在我心里勾勒出爱的记号。

At last he read it carefully over, stopping at some of the numbered paragrapbs, and marking several of them with a pencilled cross; then he folded the sheet of foolscap, went over to a cabinet on the opposite side of the room, unlocked it, and placed the paper in that very pigeon-hole into which he had thrust Alicia's letter--the pigeon-hole marked Important.

最后，他把记录仔仔细细地读了一遍，在某些标明号码的段落上停顿一番，又用铅笔在某些段落上打个叉做个记号；然后便把这张大页书写纸折叠起来；他走到房间对面一个密室跟前，开了锁，把这张纸放进了鸽笼式文件架里——就是他存放艾丽西亚来信的、那个标明"要件"的文件架里。

Introduced formal notations of derivative which keep the properties of derivative and their operations are easily realized on computer,A mechanization proving principle of automatic reasoning of transformations between differential equations is built.

引进保持性质的导数的形式记号，建立了微分方程变量间依赖关系的自动推理的机械化证明原理，从而方程间的变换（如Backlund变换等）均可机械地验证。

Is the frill pipe marked for sticking point?

在钻杆上作卡点记号了吗？

When a marked bee returned to the hive from the feeding table,Von Frisch watched through the glass.

当一只有记号的蜜蜂从喂食桌回到蜂箱时，冯·弗里施就透过玻璃进行观察。

There are all kinds of devices for marking a book intelligently and fruitfully.

在书上做记号，有各种各样好的、行之有效的方法。

The big eared hedgehog, the little owl, the sand gecko, the three-toed jerboa, and every show needs a villain - saw-scale - the viper!

大耳刺猬，小猫头鹰，沙壁虎，三趾跳鼠，每场戏都需要反派角色：蝰蛇。

Plasmodiophora brassicae ; resting spores ; density gradient centrifugation of sucrose ; ultrasonic disruption

根肿；休眠孢子；蔗糖密度梯度离心；超声波破碎