s

• He weighed the parcel in his hand ( s ) ..
  他用手掂量了一下这个包裹。
• A subset s of a ring a is a subring of a .
  环A的子集S叫作A的子环。
• S is the concentration of unpaired nucleotides .
  S是不配对的核苷酸的浓度。
• The beam from the laser l passes through the shutter s .
  激光器L发出的光束经过快门S。
• Weigh this in your hand ( s ) .
  掂掂这有多重。
• The consonants " t " , " f " and " s " are voiceless .
  辅音“t”、“f”和“s”是不发音的。
• There was a red mark on his back in the shape of the letter s .
  他的背上有一个蛇形的红斑。
• The ideal s(a)is called the saturation of a with respect to s .
  理想S（a）称作a关于S的饱和化。
• The function is called the entropy of the system, and is denoted by s .
  此函数称为该系统的熵，用S表示。