1. 他們能夠用雷達測定快艇的方位。
   They were able to position the yacht by means of radar.
2. 我 ... 找到一個六分儀?！昂美玻　蔽艺f，“他們就是用這?em>霾舛ㄌ艫母叨取！?
   I ... found a sextant ... "Now, " I said, "they take the sun through this thing."
3. 呼吸氣量測定器；肺活量計用以測量肺部吸入或呼出空氣的力量或體積的一種儀器
   An instrument for measuring the force or volume of inspiration or expiration in the lungs.
4. 圓弧測定器一種用于測定圓弧的儀器
   An instrument that measures circular arcs.
5. 有人已經提出一項測定火星周圍大氣層的饒有趣味的建議。
   An interesting suggestion for measuring the atmosphere around Mars has been put forward.

測的英語翻譯：

定的英語翻譯：