- symb. 氚（tritium）
- n. 英语字母中的第二十个字母
来自希腊字母 tau,来自希伯来字母 taw,标记，符号。
- to cross one's t's (and dot one's i's) "to be exact" is attested from 1849. Phrase to a T "exactly" is recorded from 1690s, though the exact signification remains uncertain despite much speculation. The measuring tool called a T-square (sometimes suggested as the source of this) is recorded by that name only from 1785. The T-cell (1970) so called because they are derived from the thymus. As a medieval numeral, T represented 160.
- 1. T-shirts are a nice little earner and it's better than the dole.
- 2. T-shirts now seem almost de rigueur in the West End.
- 3. He had bare feet, a T-shirt and cords on.
- 4. T-shirts, the epitome of American casualness, have moved upscale.
- 5. He wore a T-shirt that had been tie-dyed in bright colours.
[ T 造句 ]