他研究生物學已經有差不多十年的時間了。

He has been engaged in the study of biology for nearly ten years.

Source: Tatoeba

Sentence Composition

1 他 tā
  1. (third-person singular) (since the early 20th century, usu. male) he; him; his
  2. (bound form) other; another; some other (as in 他日 tārì and 他人 tārén)
2 研究生 yánjiūshēng
  1. graduate student
  2. postgraduate student
  3. research student
3 物 wù
  1. (bound form) thing
  2. (literary) the outside world as distinct from oneself; people other than oneself
4 學 xué
  1. to learn
  2. to study
  3. to imitate
  4. science
  5. -ology
5 已經 yǐjīng already
=6 有 yǒu
  1. to have; there is
  2. (bound form) having; with; -ful; -ed; -al (as in 有意 yǒuyì intentional)
=6 有 yòu
  1. (obsolete on its own in Standard Chinese) alternative form of 又 (yòu, “again”)
  2. (obsolete on its own in Standard Chinese) alternative form of 又 (yòu, “and; with a remainder of (when dividing an integer by ten)”)
  3. alternative form of 又 (yòu, “again”)
  4. alternative form of 又 (yòu, “and; with a remainder of (when dividing an integer by ten)”)
7 差不多 chàbuduō
  1. almost
  2. nearly
  3. more or less
  4. about the same
  5. good enough
  6. not bad
8 十年 shínián ten years; decade
=9 的 de
  1. of; ~'s (possessive particle)
  2. (used after an attribute when it modifies a noun)
  3. (used at the end of a declarative sentence for emphasis)
  4. (used after a noun, verb or adjective to form a nominal expression, as in 皮革的 pígéde "one made of leather" or 跑堂儿的 pǎotángrde "a waiter (literally, one who runs back and forth in a restaurant)" or 新的 xīnde "new one")
  5. also pr. dì or di in poetry and songs
=9 的 dī a taxi; a cab (abbr. for 的士 dīshì)
=9 的 dí really and truly
=9 的 dì (bound form) bull's-eye; target
10 時間 shíjiān
  1. (concept of) time
  2. (duration of) time
  3. (point in) time
=11 了 le
  1. (completed action marker)
  2. (modal particle indicating change of state, situation now)
  3. (modal particle intensifying preceding clause)
=11 了 liǎo
  1. to finish
  2. (used with 得 dé or 不 bù after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget")
  3. (literary) (usually followed by a negative such as 无 wú or 不 bù) completely (not); entirely (not); (not) in the least
  4. to understand clearly (variant of 了 liǎo)
=11 了 liǎo
  1. (of eyes) bright
  2. clear-sighted
  3. to understand clearly
=11 了 liào unofficial variant of 瞭 liào