Single head tulip bud. Bright red, yellow, purple, white, green, red gold.

单头郁金香苞，有大红、黄色、紫色、白色、绿色、红金色。

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The experiments were carried out to pursue effects of single or mixed use of several plant growth regulators (PGR) on flower bud formation, fruit set, fruit shape and production of apple.

研究了多种植物生长调节物质及其配合应用对苹果花芽形成、坐果、果形和产量的影响。

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Wearing just a single ear bud would be okay under the proposed law.

FORBES: After viral video, states want to ban texting and walking

Bud, a poor single father whose sole claim on respectability is his daughter, Molly (the smart, relaxed Madeline Carroll), an ambitious and studious fifth grader, will cast that vote ten days after Election Day.

NEWYORKER: Swing Vote

Like other viruses, HIV is a stripped-down invader: To reproduce and bud it uses a single, Swiss Army knife of a protein called GAG that hooks onto a protein normally present in healthy cells.

FORBES: Myriad Genetics On HIV Drug Trail