etches

v.

用针和酸类在金属板上蚀刻（图画等）( etch的第三人称单数 )；（感情）明显地表露在（脸上）；（脸上）明显流露出（感情）；铭刻在心里/记忆里/脑海里

1. The artist must have spent hours etching the image on the glass.
   这位美术家一定花了好几小时把这画像蚀刻在玻璃上。
2. This terrible event is etched forever in my mind.
   这一可怕事件永远深深地铭刻在我心中。
3. The trees were etched against the winter sky.
   在冬日天空的衬托下，树木的轮廓很清晰。
4. Tiredness was etched on his face.
   他的脸上流露出了疲惫。

Long-term in vitro culture and characterisation of avian embryonic stem cells with multiple morphogenetic potentialities.
Reproduction in poultry.
Production of somatic and germline chimeras in the chicken by transfer of early blastodermal cells
Respiratory depression associated with patient-controlled analgesia: a review of eight cases.
Respiratory depression and spinal opioids.
产后出血的预防和处理指南
Effect of Feed Allowance During Rearing and Breeding on Female Broiler Breeders. 3. Ovarian Steroidogenesis
Morphing skins
A radioimmunoassay for corticosterone and its application to the measurement of stress in poultry.
Germline chimeric chickens from dispersed donor blastodermal cells and compromised recipient embryos