We said singly, or in a group.

我们说好要么单独，要么起。

It is imperative that you know that. Singly know it.

你必须知道那件事。仅仅是知道而已。

Together they could protect each other, but singly they were at my mercy.

他们在起候，可以彼此相助；但是，旦分开以后，他们就要落到我掌握之中了。

Soldiers came singly and in pairs and dozens and they were always hungry.

士兵还陆陆续续地来，有个两个，有十几二十个，般都饿肚子。

Sometimes their prints occur not singly but in groups, suggesting that they lived in groups.

有它们足迹并非单独出现，而是成群出现，表明它们以群居方式生活。

" Here; singly to your face, or in the presence of your nation" .

“在这里；单独面对你，或在你国家面前”。

Clay birds flew into the air, first singly, then in pairs, then in threes and fours.

泥鸟在空中飞来飞去， 先是只，然后是成对， 再是三三两两。

After them other couples followed, filling the whole dining hall, and last of all the children, tutors, and governesses followed singly.

他们后面还有好几对宾客，长长地排满整个大厅，最后是单身孩子和男女家庭教师。

These universals have their being in the chair; universals or categories never exist singly or independently.

这些普遍性在椅子上存在;普遍性或类别从来都不是单独或独立存在。

It was very low at first, with deep mellow notes that seemed to fall singly upon one's ear.

开始声音很低，深沉圆润音符似乎是单独落在个人耳朵上。

It requires an appreciation for the properties of singly ionised helium atoms, among quite a lot else.

它需要对单离子化氦原子特性有所了解, 以及其他很多东西。

Apparently countless children loitered along the road, like beads set far apart in a string, sometimes in little knots, sometimes singly.

显然有无数孩子在路上游荡， 就像串珠子， 珠子之间距离很远， 有是小结， 有是单个。

Then came the regular settlers with lawful titles to the lands they had purchased, sometimes singly and sometimes in companies.

然后是对他们购买土地拥有合法所有权普通定居者，有是单独， 有是成群结队。

In another direction, pale Roman candles shot up singly through the trees, and a fire-haired rocket swept the horizon like a portent.

在另个方向， 淡淡罗马烛光在树林间单独升起，架火发火箭像个预兆样掠过地平线。

She at once obeyed, tested each singly by putting her foot on the rope between each knot, and pulling with her hands.

她立即​​服从， 将脚放在每个结之间绳子上， 然后用手拉动， 逐个测试。

I saw a place where participants, either singly or in groups, formed complex systems that very much resembledthe workings of modern capitalist societies.

我看到个地方， 参与者，无论是单独还是成组，形成了非常类似于现代资本主义社会运作复杂系统。

According to our experience, abrupt and strongly marked variations occur in our domesticated productions, singly and at rather long intervals of time.

根据我们经验， 在我们驯化产品中会发生突然和强烈显着变异， 这些变异是单独发生， 而且间间隔相当长。

Each of them, however, taken singly, contributes often but a very small share to the maintenance of any individual of this greater number.

然而，他们中每个， 单独来看，对维持这个更大数量任何个个体贡献往往只是很小部分。

" This is only about my two old houses in the city, which are being repaired and altered so that the rooms can be let singly" .

“这只是我在城里两栋老房子，正在修缮，可以单独出租房间”。

Carboxylic acids are a type of organic compound characterized by a carbon (C) atom doubly bonded to an oxygen (O) atom and singly bonded to a hydroxyl group (-OH) .

羧酸是种有机化合物，其特征是个碳（C）原子与个氧（O）原子双键结合，并与个羟基（-OH）单键结合。