1.
Research on Cold Resistance of Major Camellia Species and Some Horticultural Cultivars;
山茶属主要物种及部分园艺品种耐寒性研究
2.
One or two staple crops are the chief sources of food intake.
一、两种主要农作物是人们食物的主要来源。
3.
a mineral (iron-nickel sulphide) that is the chief ore of nickel.
一种矿物（铁镍硫化物），是镍的主要矿石。
4.
Echinodermata of them mainly includes two kinds of starfish and 8 kinds of Sea urchins,altogether 10 kinds;
棘皮动物主要包括海星 2种和海胆 8种共 10种 ;
5.
There are two main types of plants: The first type is flowering plants and the second is non-flowering plants.
植物主要有两种：第一种是开花植物，第二种是非开花植物。
6.
a brownish-black mineral; the major source of chromium.
一种褐黑色矿物，是铬的主要来源。
7.
a yellow sulfide used chiefly as a pigment.
一种黄色的硫化物，主要用作色素。
8.
a dark oil consisting mainly of hydrocarbons.
一种主要含碳氢化合物的黑色的油。
9.
"Resistant to drought and heat, sorghum is one of Africa's major cereal grains."
高粱耐热抗旱,是非洲的一种主要谷物
10.
a soft gray mineral; the chief ore of antimony.
一种软质的灰色矿物，是主要的锑矿石。
11.
a phosphate of calcium; a main constituent of animal bones.
一种钙的磷酸盐，是动物骨的主要成分。
12.
Seed packing of main agricultural crops
GB/T7414-1987主要农作物种子包装
13.
This beetle eats mainly the germ of the grain.
这种甲虫主要吃谷物的胚芽。
14.
There are three primary theories concerning sediment flow rate.
关于沉积物的流动率有三种主要理论
15.
There are four main types of characters: the lead, the female lead, the painted face and the clown.
京剧中主要有四种人物：生、旦、净、丑。
16.
Ecological features: Description of the main habitats and vegetation types, listing the dominant plant communities and species.
生态特征：描述主要的湿地和植物类型，列出主要的植物群落和种类。
17.
Inoculation area: the main equipment here is bio safety cabinet.
1接种区：仪器设备主要要有生物安全柜。
18.
An auxotroph requires, in addition to the principal carbon source, one or more organic nutrients.
缺陷营养生物除需要主要碳源外，还需要一种或几种有机养料。