1.
Any foreign agent or organism that is harmful to the body.
任何对身体有害的外来物或生物。
2.
do a great job in slowing the spread of undesirable foreign species,
有力地缓减了外来物种的蔓延，
3.
But can foreign things become native?
但是外来物能变成土生土长的吗？
4.
There are more than 1,000 alien species in China.
中国的外来物种有1000多种。
5.
The introduction of foreign species is a global phenomenon,
引进外来物种是一种全球性的现象，
6.
making impure or corrupt by adding extraneous materials.
加入其它外来物质使之不纯或腐坏的。
7.
To remove extraneous matter from(the teeth).
剔除从（牙上）剔除外来物质
8.
Take precaution against the risk of exotic species invasion and safeguard the safety of ecosystem
防范外来物种入侵风险,维护生态安全
9.
alien customs; exotic plants in a greenhouse; moved to a strange country.
外国的风俗；温室中的外来植物；搬去外地的城市。
10.
Not inherent or essential; derived from something outside.
外来的，外加的非固有的或非本质的；来源于外部事物的
11.
The influence of exotic in herb is more grave than in shrub.
草本层中外来植物的影响程度大于灌木层中外来植物的影响程度。
12.
Fast Catalogue of Alien Invasive Weeds by Vis/NIR Spectroscopy
基于近红外反射光谱的外来入侵植物的辨识
13.
To rid of impurities, blemishes, muddiness, or foreign matter.
使完美去除杂质、污渍、污泥或外来事物
14.
From the outside the workers bring in food to the queen.
工蚁从外面采集食物来给蚁后吃。
15.
Both products are released by exocytosis.
两种产物都由外排作用释放出来。
16.
The presence of oxides will result in infrared absorption.
氧化物的存在将带来红外吸收。
17.
For all they knew, he could have been a creature from outer space.
谁知道，他可能是来自外层空间的生物。
18.
Some systems use ultraviolet light to destory harmful organisms.
一些系统使用紫外线来破坏微生物。