Someone liken his voice to the croak of a bull-frog

To appraise bullfrog, protect and preserve superior characters and breeding quality of its protospecies, the main external characters, reproductive capacity and growing characters of bull frog were studied.

为鉴定、保护和保存牛蛙原种优良性状，研究了牛蛙的主要外部性状、繁殖力及生长特性。

Conclusion: There are A type potassium cannel and delayed rectifier potassium cannel on bull frog ′ s saccular hair cells ′ membrane. 〔

结论：牛蛙毛细胞膜上含有A型钾通道和延迟整流性钾通道。

He saw some workers taking a bull session and accused them.

他看见几个工人在闲聊，就责备了他们。

There will be a bull session this afternoon in our group.

今天下午我们群将展开自由讨论。

We have a little bull session after work.

下班后，我们要开一个小的讨论会。

He is past President of the Golden State Bull Terrier Club and former board member of the national Bull Terrier Club of America, and of the BTCA Welfare Foundation.

他是前任美国全国牛头梗俱乐部的常务理事及GOLDEN STATE牛头梗俱乐部的会长，和BTCA福利救济基金会的常务理事。

He was busy thinking of the bull terrier he had kept in his younger days to which he had fed steaks without end.

他想起自己年轻的时候养过一只猎犬，那时他用肉和牛排喂它。

This year's" Best is Show "was" Rufus", a bull terrier.

今年“狗狗秀”的得胜者是一只名叫“卢夫斯”的牛头梗狗。

The tan-coloured dog looks suspiciously like an American pit bull terrier

这只棕黄色的狗看上去非常像美国比特犬。

Obviously, it incorporates not only the local information of rise-fall fluctuations, but also the large background information of bull-bear trend, so it is a blend of trend theory and wave theory in technology analysis.

显然，它既吸收了局部的起伏波动信息，也吸收了牛熊趋势背景信息，是技术分析中的趋势理论和波浪理论思想的一个综合。

You're just bull-headed enough to do it, aren't you?

你非常固执地要那样做，是吧？

When you take a stand, you're being bull-headed.

当你紧持自己的立场时，那是固执。

From deep inside a bull-headed resolution welled up.

在我的内心，一个固执的决定涌了出来。

Surgical treatment of special pneumohemothorax caused by ruptured bullae of lung

肺大疱破裂致自发性血气胸的外科治疗

One case: great pulmonary bulla

巨大肺大泡一例报告

Giant Bullae: Comparison Study of Findings of Thoracic CT and X-ray Plain Film

巨大肺大泡：胸部CT与X线平片的比较研究

Conclusion: Patients with special pneumohemothorax caused by pulmonary bulla ruptured should be operated as early as possible.

结论：肺大疱破裂所致自发性血气胸应早期手术治疗。

Objective To discuss the experience in surgical treatment of gravis pulmonary bulla and in management during peri-operation.

李英杰，李捷，于长海，俞建琦，张文，夏晖目的总结重症肺大疱的手术治疗经验。

Surgical Treatment of 86 Cases with Rupture of the Pulmonary Bullae

86例肺大泡破裂的外科处理

Clinical analysis of 10 cases of connective tissue diseases with lung bullae

结缔组织病合并肺大泡十例临床分析