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- He is just listening in external of that room. 他正在那房间的外面留神听着。
- This news program only covers external events. 这一新闻节目只报道国外消息。
- external phloem 外生韧皮部
- She sets great store by external politeness. 她很注重表面的虚礼。
- There is a little idioblasts in the phloem. 叶脉维管束中韧皮部都具有异细胞存在。
- Our external trade has expanded during recent years. 我国的对外贸易近几年来有所发展。
- If the same phellogen functions from year to year, as in beech and oak, then the bark is smooth and consists only of tissue external to the phloem, mainly cork. 如在榉木或橡木中，相同的木栓形成层年复一年的活动，那么树皮是光滑的，并且仅形成韧皮部的外方组织，主要是木栓（软木）。
- He judge people by mere external clothes rather than internal character. 他判断人只靠着外表的衣服而不是内在的品格。
- The metal or plastic external structure of a motor vehicle. 车身机动车的金属和塑料的外部结构
- External torques arise from outside the system. 外转矩是由系统外部生产的。
- Fluid motion caused by an external force such as gravity. 流体运动由重力等外力引起的流体运动
- The vascular cambium is located between the xylem and the phloem. 维管形成层位于木韧之间。
- The damage was caused by external forces. 损害是由外力引起的。
- Four types of external balances are in general use. 通常使用的外式天平有四种。
- Nature is the great agent of the external universe. 大自然是客观宇宙的主要力量。
- They are the external or uncontrollable factors. 它们是外在，无法控制的因素。
- Insects need an external source of sterols. 昆虫需要外界来源的固醇类。
- Primary phloem PHLOEM derived from the procambium in the young plant. 初生韧皮部：指幼嫩植物中来源于原形成层的韧皮部。
- The external recognition cannot mean much to you. 外界的这种表扬对你并不十分重要。
- Being rich is a very external quality. 富有是一种外在的特征。
