| 释义 |
trace-element 英t'reɪs'elɪmənt美t'reɪs'elɪmənt BNC¹⁷³⁹⁹⁵⁺²
基本英英例句
微量元素¹⁰⁰
名词 trace element:
an element that occurs at very small quantities in the body but is nonetheless important for many biological processesTrace element mixes serve as insurances.微量元素只是作为一种保障措施。
Kelp is rich in vitamins and trace elements.大型褐藻富含维他命和微量元素。 |