Deep Groove ball bearings are the most popular of all the ball bearing types because they are available in a wide variety of seal, shield and snap-ring arrangements.
深沟球轴承是所有类型的球轴承最流行的，因为他们是在一个密封，盾牌和管理各种各样的戒指安排可用。
2
The tragedy in the heart of the seal Randall a deep imprint, strong guilt that he nearly gave up their rescue career.
这场悲剧在兰德尔的心中印下了一个深深的烙印，强烈的内疚感使得他几乎快要放弃自己的营救职业。
3
Developed nations are under intense pressure to agree to deep 2020 cuts in greenhouse gas emissions to try to seal an agreement at the end of this year that will replace the Kyoto Protocol.